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<p class="MsoNormal">I am getting a crash trying to embed Python into my VB program using Python for .NET.<span style="mso-spacerun:yes">
</span>The goal of my application is to allow users to run their own python scripts inside a larger application.<span style="mso-spacerun:yes">
</span>The crash I am getting happens the second time I run a script that imports certain large libraries (like numpy or scikit-image) but does not affect all libraries (for example PIL).<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">My environment:<o:p></o:p></p>
<p class="MsoNormal">Windows 10 Pro x64, Python 3.6.5 (in Anaconda), Python for .Net 2.4.0 (installed from git’s master branch).<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Here is the VB code:<o:p></o:p></p>
<div style="mso-element:para-border-div;border:solid windowtext 1.0pt;
mso-border-alt:solid windowtext .5pt;padding:1.0pt 4.0pt 1.0pt 4.0pt">
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><span style="mso-spacerun:yes">
</span></span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;
font-family:Consolas;mso-bidi-font-family:Consolas;color:blue">Public</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black">
</span><span style="font-size:10.0pt;
mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:blue">Function</span><span style="font-size:10.0pt;mso-bidi-font-size:
9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;color:black">
Startup(</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:blue">ByRef</span><span style="font-size:
10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:black">
param </span><span style="font-size:10.0pt;mso-bidi-font-size:
9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;color:blue">As</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black">
</span><span style="font-size:10.0pt;
mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:blue">String</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;
font-family:Consolas;mso-bidi-font-family:Consolas;color:black">)
</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:blue">As</span><span style="font-size:10.0pt;
mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:black">
</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;
font-family:Consolas;mso-bidi-font-family:Consolas;color:blue">Integer</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><span style="mso-spacerun:yes">
</span>PythonEngine.Initialize()<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><span style="mso-spacerun:yes">
</span></span><span style="font-size:10.0pt;
mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:green">'mm.PrintMsg(PythonEngine.BuildInfo)</span><span style="font-size:
10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:black"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><span style="mso-spacerun:yes">
</span></span><span style="font-size:10.0pt;
mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:green">'mm.PrintMsg(PythonEngine.Compiler)</span><span style="font-size:
10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:black"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><span style="mso-spacerun:yes">
</span></span><span style="font-size:10.0pt;
mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:green">'mm.PrintMsg(PythonEngine.Platform)</span><span style="font-size:
10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:black"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><span style="mso-spacerun:yes">
</span></span><span style="font-size:10.0pt;
mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:green">'mm.PrintMsg(PythonEngine.ProgramName)</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><span style="mso-spacerun:yes">
</span></span><span style="font-size:10.0pt;
mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:green">'mm.PrintMsg(PythonEngine.PythonHome)</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><span style="mso-spacerun:yes">
</span></span><span style="font-size:10.0pt;
mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:green">'mm.PrintMsg(PythonEngine.PythonPath)</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><span style="mso-spacerun:yes">
</span></span><span style="font-size:10.0pt;
mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:blue">Using</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;
font-family:Consolas;mso-bidi-font-family:Consolas;color:black">
(Py.GIL())<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><span style="mso-spacerun:yes">
</span></span><span style="font-size:10.0pt;
mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:blue">Dim</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;
font-family:Consolas;mso-bidi-font-family:Consolas;color:black">
scriptPath </span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:blue">As</span><span style="font-size:10.0pt;
mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:black">
</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;
font-family:Consolas;mso-bidi-font-family:Consolas;color:blue">String</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black">
= param<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><span style="mso-spacerun:yes">
</span></span><span style="font-size:10.0pt;
mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:blue">Dim</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;
font-family:Consolas;mso-bidi-font-family:Consolas;color:black">
scriptDir </span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:blue">As</span><span style="font-size:10.0pt;
mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:black">
</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;
font-family:Consolas;mso-bidi-font-family:Consolas;color:blue">String</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black">
= Path.GetDirectoryName(scriptPath)<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><span style="mso-spacerun:yes">
</span></span><span style="font-size:10.0pt;
mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:blue">Dim</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;
font-family:Consolas;mso-bidi-font-family:Consolas;color:black">
scriptName </span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:blue">As</span><span style="font-size:10.0pt;
mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:black">
</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;
font-family:Consolas;mso-bidi-font-family:Consolas;color:blue">String</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black">
= GetPythonModuleName(scriptPath)<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><span style="mso-spacerun:yes">
</span></span><span style="font-size:10.0pt;
mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:blue">Dim</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;
font-family:Consolas;mso-bidi-font-family:Consolas;color:black">
scriptParam </span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:blue">As</span><span style="font-size:10.0pt;
mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:black">
</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;
font-family:Consolas;mso-bidi-font-family:Consolas;color:blue">String</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black">
= </span><span style="font-size:
10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:#A31515">""</span><span style="font-size:10.0pt;mso-bidi-font-size:
9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;color:black"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><span style="mso-spacerun:yes">
</span></span><span style="font-size:10.0pt;
mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:blue">Dim</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;
font-family:Consolas;mso-bidi-font-family:Consolas;color:black">
scriptScope </span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:blue">As</span><span style="font-size:10.0pt;
mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:black">
PyScope = Py.CreateScope()<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><span style="mso-spacerun:yes">
</span></span><span style="font-size:10.0pt;
mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:blue">Dim</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;
font-family:Consolas;mso-bidi-font-family:Consolas;color:black">
scriptText </span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:blue">As</span><span style="font-size:10.0pt;
mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:black">
</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;
font-family:Consolas;mso-bidi-font-family:Consolas;color:blue">String</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black">
= My.Computer.FileSystem.ReadAllText(scriptPath)<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><span style="mso-spacerun:yes">
</span>scriptScope.Exec(scriptText)<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><span style="mso-spacerun:yes">
</span></span><span style="font-size:10.0pt;
mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:blue">If</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;
font-family:Consolas;mso-bidi-font-family:Consolas;color:black">
scriptScope.Contains(STARTUP_METHOD_NAME) </span><span style="font-size:10.0pt;
mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:blue">Then</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;
font-family:Consolas;mso-bidi-font-family:Consolas;color:black"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><span style="mso-spacerun:yes">
</span>scriptScope.Exec(</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:blue">String</span><span style="font-size:
10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:black">.Format(</span><span style="font-size:10.0pt;mso-bidi-font-size:
9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;color:#A31515">"{0}(r'{1}')"</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black">,
STARTUP_METHOD_NAME, scriptParam))<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><span style="mso-spacerun:yes">
</span></span><span style="font-size:10.0pt;
mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:blue">End</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;
font-family:Consolas;mso-bidi-font-family:Consolas;color:black">
</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:blue">If</span><span style="font-size:10.0pt;
mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:black"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><span style="mso-spacerun:yes">
</span>scriptScope.Dispose()<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><span style="mso-spacerun:yes">
</span></span><span style="font-size:10.0pt;
mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:blue">End</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;
font-family:Consolas;mso-bidi-font-family:Consolas;color:black">
</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:blue">Using</span><span style="font-size:
10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:black"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><span style="mso-spacerun:yes">
</span>PythonEngine.Shutdown()<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><span style="mso-spacerun:yes">
</span></span><span style="font-size:10.0pt;
mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:blue">Return</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;
font-family:Consolas;mso-bidi-font-family:Consolas;color:black">
0<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><span style="mso-spacerun:yes">
</span></span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;
font-family:Consolas;mso-bidi-font-family:Consolas;color:blue">End</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black">
</span><span style="font-size:10.0pt;
mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:blue">Function</span><span style="font-size:10.0pt;mso-bidi-font-size:
9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;color:black"><o:p></o:p></span></p>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">And this is the Python script I am running:<o:p></o:p></p>
<div style="mso-element:para-border-div;border:solid windowtext 1.0pt;
mso-border-alt:solid windowtext .5pt;padding:1.0pt 4.0pt 1.0pt 4.0pt">
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:blue">import</span><span style="font-size:
10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:black"> skimage.io<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:blue">def</span><span style="font-size:
10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:black">
</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;
font-family:Consolas;mso-bidi-font-family:Consolas;color:#FF33CC">Startup</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black">(param):<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><span style="mso-spacerun:yes">
</span></span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;
font-family:Consolas;mso-bidi-font-family:Consolas;color:blue">pass<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:blue">def</span><span style="font-size:
10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:black">
</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;
font-family:Consolas;mso-bidi-font-family:Consolas;color:#FF33CC">Docommand</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black">(param):<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><span style="mso-spacerun:yes">
</span></span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;
font-family:Consolas;mso-bidi-font-family:Consolas;color:blue">pass<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><span style="mso-spacerun:yes">
</span><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:blue">def</span><span style="font-size:
10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:black">
</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;
font-family:Consolas;mso-bidi-font-family:Consolas;color:#FF33CC">Shutdown</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black">():<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><span style="mso-spacerun:yes">
</span></span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;
font-family:Consolas;mso-bidi-font-family:Consolas;color:blue">pass</span><o:p></o:p></p>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">When I run it the VB code the first time, things work great.<span style="mso-spacerun:yes">
</span>When I run the VB code a second time (without first restarting the entire application) I get an access violation exception on the scriptScope.Exec() call:<o:p></o:p></p>
<div style="mso-element:para-border-div;border:solid windowtext 1.0pt;
mso-border-alt:solid windowtext .5pt;padding:1.0pt 4.0pt 1.0pt 4.0pt">
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;border:none;mso-border-alt:solid windowtext .5pt;padding:0in;mso-padding-alt:
1.0pt 4.0pt 1.0pt 4.0pt">
<b style="mso-bidi-font-weight:normal"><span style="mso-ascii-font-family:Calibri;mso-fareast-font-family:"Times New Roman";
mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri">Exception:</span></b><span style="mso-ascii-font-family:Calibri;mso-fareast-font-family:"Times New Roman";
mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri">
System.AccessViolationException :<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;border:none;mso-border-alt:solid windowtext .5pt;padding:0in;mso-padding-alt:
1.0pt 4.0pt 1.0pt 4.0pt">
<b style="mso-bidi-font-weight:normal"><span style="mso-ascii-font-family:Calibri;mso-fareast-font-family:"Times New Roman";
mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri">Message:</span></b><span style="mso-ascii-font-family:Calibri;mso-fareast-font-family:"Times New Roman";
mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri">
Attempted to read or write protected memory. This is often an indication that other memory is corrupt.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;border:none;mso-border-alt:solid windowtext .5pt;padding:0in;mso-padding-alt:
1.0pt 4.0pt 1.0pt 4.0pt">
<b style="mso-bidi-font-weight:normal"><span style="mso-ascii-font-family:Calibri;mso-fareast-font-family:"Times New Roman";
mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri">Source:</span></b><span style="mso-ascii-font-family:Calibri;mso-fareast-font-family:"Times New Roman";
mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri">
Python.Runtime<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;border:none;mso-border-alt:solid windowtext .5pt;padding:0in;mso-padding-alt:
1.0pt 4.0pt 1.0pt 4.0pt">
<b style="mso-bidi-font-weight:normal"><span style="mso-ascii-font-family:Calibri;mso-fareast-font-family:"Times New Roman";
mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri">StackTrace:<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;border:none;mso-border-alt:solid windowtext .5pt;padding:0in;mso-padding-alt:
1.0pt 4.0pt 1.0pt 4.0pt">
<span style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri"><span style="mso-spacerun:yes">
</span>at Python.Runtime.Runtime.PyObject_Call(IntPtr pointer, IntPtr args, IntPtr kw)<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;border:none;mso-border-alt:solid windowtext .5pt;padding:0in;mso-padding-alt:
1.0pt 4.0pt 1.0pt 4.0pt">
<span style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri"><span style="mso-spacerun:yes">
</span>at Python.Runtime.ImportHook.__import__(IntPtr self, IntPtr args, IntPtr kw)<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;border:none;mso-border-alt:solid windowtext .5pt;padding:0in;mso-padding-alt:
1.0pt 4.0pt 1.0pt 4.0pt">
<span style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri"><span style="mso-spacerun:yes">
</span>at Python.Runtime.Runtime.PyObject_Call(IntPtr pointer, IntPtr args, IntPtr kw)<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;border:none;mso-border-alt:solid windowtext .5pt;padding:0in;mso-padding-alt:
1.0pt 4.0pt 1.0pt 4.0pt">
<span style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri"><span style="mso-spacerun:yes">
</span>at Python.Runtime.ImportHook.__import__(IntPtr self, IntPtr args, IntPtr kw)<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;border:none;mso-border-alt:solid windowtext .5pt;padding:0in;mso-padding-alt:
1.0pt 4.0pt 1.0pt 4.0pt">
<span style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri"><span style="mso-spacerun:yes">
</span>at Python.Runtime.Runtime.PyObject_Call(IntPtr pointer, IntPtr args, IntPtr kw)<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;border:none;mso-border-alt:solid windowtext .5pt;padding:0in;mso-padding-alt:
1.0pt 4.0pt 1.0pt 4.0pt">
<span style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri"><span style="mso-spacerun:yes">
</span>at Python.Runtime.ImportHook.__import__(IntPtr self, IntPtr args, IntPtr kw)<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;border:none;mso-border-alt:solid windowtext .5pt;padding:0in;mso-padding-alt:
1.0pt 4.0pt 1.0pt 4.0pt">
<span style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri"><span style="mso-spacerun:yes">
</span>at Python.Runtime.Runtime.PyObject_Call(IntPtr pointer, IntPtr args, IntPtr kw)<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;border:none;mso-border-alt:solid windowtext .5pt;padding:0in;mso-padding-alt:
1.0pt 4.0pt 1.0pt 4.0pt">
<span style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri"><span style="mso-spacerun:yes">
</span>at Python.Runtime.ImportHook.__import__(IntPtr self, IntPtr args, IntPtr kw)<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;border:none;mso-border-alt:solid windowtext .5pt;padding:0in;mso-padding-alt:
1.0pt 4.0pt 1.0pt 4.0pt">
<span style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri"><span style="mso-spacerun:yes">
</span>at Python.Runtime.Runtime.PyObject_Call(IntPtr pointer, IntPtr args, IntPtr kw)<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;border:none;mso-border-alt:solid windowtext .5pt;padding:0in;mso-padding-alt:
1.0pt 4.0pt 1.0pt 4.0pt">
<span style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri"><span style="mso-spacerun:yes">
</span>at Python.Runtime.ImportHook.__import__(IntPtr self, IntPtr args, IntPtr kw)<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;border:none;mso-border-alt:solid windowtext .5pt;padding:0in;mso-padding-alt:
1.0pt 4.0pt 1.0pt 4.0pt">
<span style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri"><span style="mso-spacerun:yes">
</span>at Python.Runtime.Runtime.PyObject_Call(IntPtr pointer, IntPtr args, IntPtr kw)<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;border:none;mso-border-alt:solid windowtext .5pt;padding:0in;mso-padding-alt:
1.0pt 4.0pt 1.0pt 4.0pt">
<span style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri"><span style="mso-spacerun:yes">
</span>at Python.Runtime.ImportHook.__import__(IntPtr self, IntPtr args, IntPtr kw)<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;border:none;mso-border-alt:solid windowtext .5pt;padding:0in;mso-padding-alt:
1.0pt 4.0pt 1.0pt 4.0pt">
<span style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri"><span style="mso-spacerun:yes">
</span>at Python.Runtime.Runtime.PyObject_Call(IntPtr pointer, IntPtr args, IntPtr kw)<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;border:none;mso-border-alt:solid windowtext .5pt;padding:0in;mso-padding-alt:
1.0pt 4.0pt 1.0pt 4.0pt">
<span style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri"><span style="mso-spacerun:yes">
</span>at Python.Runtime.ImportHook.__import__(IntPtr self, IntPtr args, IntPtr kw)<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;border:none;mso-border-alt:solid windowtext .5pt;padding:0in;mso-padding-alt:
1.0pt 4.0pt 1.0pt 4.0pt">
<span style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri"><span style="mso-spacerun:yes">
</span>at Python.Runtime.Runtime.PyObject_Call(IntPtr pointer, IntPtr args, IntPtr kw)<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;border:none;mso-border-alt:solid windowtext .5pt;padding:0in;mso-padding-alt:
1.0pt 4.0pt 1.0pt 4.0pt">
<span style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri"><span style="mso-spacerun:yes">
</span>at Python.Runtime.ImportHook.__import__(IntPtr self, IntPtr args, IntPtr kw)<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;border:none;mso-border-alt:solid windowtext .5pt;padding:0in;mso-padding-alt:
1.0pt 4.0pt 1.0pt 4.0pt">
<span style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri"><span style="mso-spacerun:yes">
</span>at Python.Runtime.Runtime.PyObject_Call(IntPtr pointer, IntPtr args, IntPtr kw)<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;border:none;mso-border-alt:solid windowtext .5pt;padding:0in;mso-padding-alt:
1.0pt 4.0pt 1.0pt 4.0pt">
<span style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri"><span style="mso-spacerun:yes">
</span>at Python.Runtime.ImportHook.__import__(IntPtr self, IntPtr args, IntPtr kw)<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;border:none;mso-border-alt:solid windowtext .5pt;padding:0in;mso-padding-alt:
1.0pt 4.0pt 1.0pt 4.0pt">
<span style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri"><span style="mso-spacerun:yes">
</span>at Python.Runtime.Runtime.PyRun_String(String code, IntPtr st, IntPtr globals, IntPtr locals)<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;border:none;mso-border-alt:solid windowtext .5pt;padding:0in;mso-padding-alt:
1.0pt 4.0pt 1.0pt 4.0pt">
<span style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri"><span style="mso-spacerun:yes">
</span>at Python.Runtime.PyScope.Exec(String code, IntPtr _globals, IntPtr _locals)<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;border:none;mso-border-alt:solid windowtext .5pt;padding:0in;mso-padding-alt:
1.0pt 4.0pt 1.0pt 4.0pt">
<span style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri"><span style="mso-spacerun:yes">
</span>at MyApp.MyClass.Startup(String& param) in C:\Git\MyPath\MyApp.vb:line 132<o:p></o:p></span></p>
</div>
<p class="MsoNormal"><span style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri"><o:p> Unfortunately the stack trace doesn't show line numbers for anything in the Python.Runtime.</o:p></span></p>
<p class="MsoNormal"><span style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri"><o:p> </o:p></span></p>
<p class="MsoNormal">Interestingly, if you look at the VB code, I have some lines of commented out code:<o:p></o:p></p>
<div style="mso-element:para-border-div;border:solid windowtext 1.0pt;
mso-border-alt:solid windowtext .5pt;padding:1.0pt 4.0pt 1.0pt 4.0pt">
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><span style="mso-spacerun:yes">
</span></span><span style="font-size:10.0pt;
mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:green">'mm.PrintMsg(PythonEngine.BuildInfo)</span><span style="font-size:
10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:black"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><span style="mso-spacerun:yes">
</span></span><span style="font-size:10.0pt;
mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:green">'mm.PrintMsg(PythonEngine.Compiler)</span><span style="font-size:
10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:black"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><span style="mso-spacerun:yes">
</span></span><span style="font-size:10.0pt;
mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:green">'mm.PrintMsg(PythonEngine.Platform)</span><span style="font-size:
10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:black"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><span style="mso-spacerun:yes">
</span></span><span style="font-size:10.0pt;
mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:green">'mm.PrintMsg(PythonEngine.ProgramName)</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><span style="mso-spacerun:yes">
</span></span><span style="font-size:10.0pt;
mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:green">'mm.PrintMsg(PythonEngine.PythonHome)</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><span style="mso-spacerun:yes">
</span></span><span style="font-size:10.0pt;
mso-bidi-font-size:9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;
color:green">'mm.PrintMsg(PythonEngine.PythonPath)</span><span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><o:p></o:p></span></p>
</div>
<p class="MsoNormal"><br>
</p>
<p class="MsoNormal">Since the app doesn’t have a console, this sends the text to the enclosing app for display.<span style="mso-spacerun:yes">
</span>If I uncommon that code, then the first time I run it I get:<o:p></o:p></p>
<div style="mso-element:para-border-div;border:solid windowtext 1.0pt;
mso-border-alt:solid windowtext .5pt;padding:1.0pt 4.0pt 1.0pt 4.0pt">
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black">default, Mar 29 2018, 13:32:41<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black">[MSC v.1900 64 bit (AMD64)]<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black">win32<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black">python<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black">F:\Anaconda3\python36.zip;F:\Anaconda3\Lib;F:\Anaconda3\DLLs;C:\MX6<o:p></o:p></span></p>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">And the second time I run it I get:<o:p></o:p></p>
<div style="mso-element:para-border-div;border:solid windowtext 1.0pt;
mso-border-alt:solid windowtext .5pt;padding:1.0pt 4.0pt 1.0pt 4.0pt">
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black">default, Mar 29 2018, 13:32:41<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black">[MSC v.1900 64 bit (AMD64)]<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black">win32<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<b style="mso-bidi-font-weight:normal"><span style="font-size:10.0pt;mso-bidi-font-size:
9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;color:black">pyth???<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<b style="mso-bidi-font-weight:normal"><span style="font-size:10.0pt;mso-bidi-font-size:
9.5pt;font-family:Consolas;mso-bidi-font-family:Consolas;color:black">???<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal;mso-layout-grid-align:none;text-autospace:none;border:none;mso-border-alt:
solid windowtext .5pt;padding:0in;mso-padding-alt:1.0pt 4.0pt 1.0pt 4.0pt">
<span style="font-size:10.0pt;mso-bidi-font-size:9.5pt;font-family:Consolas;
mso-bidi-font-family:Consolas;color:black">F:\Anaconda3\python36.zip;F:\Anaconda3\Lib;F:\Anaconda3\DLLs;C:\MX6<o:p></o:p></span></p>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">And the application doesn’t crash!<span style="mso-spacerun:yes">
</span>Instead it just says the skimage module can’t be found.<span style="mso-spacerun:yes">
</span>Notice the bolded lines (bold added after the fact).<span style="mso-spacerun:yes">
</span>The program name and python home values are being corrupted.<o:p></o:p></p>
<p class="MsoNormal">Is there something I am doing wrong as far as taking down the PythonEngine such that it could be put back up in an as-new state later on?<o:p></o:p></p>
<br>
<p></p>
<p style="margin-top:0;margin-bottom:0"><br>
</p>
<div id="Signature">
<div id="divtagdefaultwrapper" dir="ltr" style="font-size: 12pt; color: rgb(0, 0, 0); font-family: Calibri, Helvetica, sans-serif, EmojiFont, "Apple Color Emoji", "Segoe UI Emoji", NotoColorEmoji, "Segoe UI Symbol", "Android Emoji", EmojiSymbols;">
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<p class="x_MsoNormal" style="margin:0in 0in 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif; color:rgb(33,33,33)">
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