Did you try background or threadpool threads? Redirected process calls and looking for stdin stdout stderr streams allows more control.<br><br><div id="ymail_android_signature"><a href="https://go.onelink.me/107872968?pid=InProduct&c=Global_Internal_YGrowth_AndroidEmailSig__AndroidUsers&af_wl=ym&af_sub1=Internal&af_sub2=Global_YGrowth&af_sub3=EmailSignature">Sent from Yahoo Mail on Android</a></div> <br> <blockquote style="margin: 0 0 20px 0;"> <div style="font-family:Roboto, sans-serif; color:#6D00F6;"> <div>On Wed, Oct 3, 2018 at 15:47, Luke, Steve</div><div><Steve.Luke@moldev.com> wrote:</div> </div> <div style="padding: 10px 0 0 20px; margin: 10px 0 0 0; border-left: 1px solid #6D00F6;"> <div id="yiv5337413704">
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<p class="yiv5337413704MsoNormal">I am getting a crash trying to embed Python into my VB program using Python for .NET.<span style="">
</span>The goal of my application is to allow users to run their own python scripts inside a larger application.<span style="">
</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).</p>
<p class="yiv5337413704MsoNormal"> </p>
<p class="yiv5337413704MsoNormal">My environment:</p>
<p class="yiv5337413704MsoNormal">Windows 10 Pro x64, Python 3.6.5 (in Anaconda), Python for .Net 2.4.0 (installed from git’s master branch).</p>
<p class="yiv5337413704MsoNormal"> </p>
<p class="yiv5337413704MsoNormal">Here is the VB code:</p>
<div style="border:solid windowtext 1.0pt;padding:1.0pt 4.0pt 1.0pt 4.0pt;">
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"><span style="">
</span></span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">Public</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">
</span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">Function</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">
Startup(</span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">ByRef</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">
param </span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">As</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">
</span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">String</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">)
</span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">As</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">
</span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">Integer</span><span style="font-size:10.0pt;font-family:Consolas;color:black;"></span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"><span style="">
</span>PythonEngine.Initialize()</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"><span style="">
</span></span><span style="font-size:10.0pt;font-family:Consolas;color:green;">'mm.PrintMsg(PythonEngine.BuildInfo)</span><span style="font-size:10.0pt;font-family:Consolas;color:black;"></span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"><span style="">
</span></span><span style="font-size:10.0pt;font-family:Consolas;color:green;">'mm.PrintMsg(PythonEngine.Compiler)</span><span style="font-size:10.0pt;font-family:Consolas;color:black;"></span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"><span style="">
</span></span><span style="font-size:10.0pt;font-family:Consolas;color:green;">'mm.PrintMsg(PythonEngine.Platform)</span><span style="font-size:10.0pt;font-family:Consolas;color:black;"></span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"><span style="">
</span></span><span style="font-size:10.0pt;font-family:Consolas;color:green;">'mm.PrintMsg(PythonEngine.ProgramName)</span><span style="font-size:10.0pt;font-family:Consolas;color:black;"></span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"><span style="">
</span></span><span style="font-size:10.0pt;font-family:Consolas;color:green;">'mm.PrintMsg(PythonEngine.PythonHome)</span><span style="font-size:10.0pt;font-family:Consolas;color:black;"></span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"><span style="">
</span></span><span style="font-size:10.0pt;font-family:Consolas;color:green;">'mm.PrintMsg(PythonEngine.PythonPath)</span><span style="font-size:10.0pt;font-family:Consolas;color:black;"></span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"><span style="">
</span></span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">Using</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">
(Py.GIL())</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"> </span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"><span style="">
</span></span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">Dim</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">
scriptPath </span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">As</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">
</span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">String</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">
= param</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"> </span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"><span style="">
</span></span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">Dim</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">
scriptDir </span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">As</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">
</span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">String</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">
= Path.GetDirectoryName(scriptPath)</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"><span style="">
</span></span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">Dim</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">
scriptName </span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">As</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">
</span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">String</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">
= GetPythonModuleName(scriptPath)</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"><span style="">
</span></span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">Dim</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">
scriptParam </span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">As</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">
</span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">String</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">
= </span><span style="font-size:10.0pt;font-family:Consolas;color:#A31515;">""</span><span style="font-size:10.0pt;font-family:Consolas;color:black;"></span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"> </span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"><span style="">
</span></span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">Dim</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">
scriptScope </span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">As</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">
PyScope = Py.CreateScope()</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"> </span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"><span style="">
</span></span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">Dim</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">
scriptText </span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">As</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">
</span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">String</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">
= My.Computer.FileSystem.ReadAllText(scriptPath)</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"><span style="">
</span>scriptScope.Exec(scriptText)</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"> </span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"><span style="">
</span></span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">If</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">
scriptScope.Contains(STARTUP_METHOD_NAME) </span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">Then</span><span style="font-size:10.0pt;font-family:Consolas;color:black;"></span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"><span style="">
</span>scriptScope.Exec(</span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">String</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">.Format(</span><span style="font-size:10.0pt;font-family:Consolas;color:#A31515;">"{0}(r'{1}')"</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">,
STARTUP_METHOD_NAME, scriptParam))</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"><span style="">
</span></span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">End</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">
</span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">If</span><span style="font-size:10.0pt;font-family:Consolas;color:black;"></span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"> </span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"><span style="">
</span>scriptScope.Dispose()</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"><span style="">
</span></span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">End</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">
</span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">Using</span><span style="font-size:10.0pt;font-family:Consolas;color:black;"></span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"><span style="">
</span>PythonEngine.Shutdown()</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"> </span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"><span style="">
</span></span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">Return</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">
0</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"><span style="">
</span></span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">End</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">
</span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">Function</span><span style="font-size:10.0pt;font-family:Consolas;color:black;"></span></p>
</div>
<p class="yiv5337413704MsoNormal"> </p>
<p class="yiv5337413704MsoNormal">And this is the Python script I am running:</p>
<div style="border:solid windowtext 1.0pt;padding:1.0pt 4.0pt 1.0pt 4.0pt;">
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:blue;">import</span><span style="font-size:10.0pt;font-family:Consolas;color:black;"> skimage.io</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"> </span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:blue;">def</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">
</span><span style="font-size:10.0pt;font-family:Consolas;color:#FF33CC;">Startup</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">(param):</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"><span style="">
</span></span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">pass</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"> </span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:blue;">def</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">
</span><span style="font-size:10.0pt;font-family:Consolas;color:#FF33CC;">Docommand</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">(param):</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"><span style="">
</span></span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">pass</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"><span style="">
</span></span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:blue;">def</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">
</span><span style="font-size:10.0pt;font-family:Consolas;color:#FF33CC;">Shutdown</span><span style="font-size:10.0pt;font-family:Consolas;color:black;">():</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"><span style="">
</span></span><span style="font-size:10.0pt;font-family:Consolas;color:blue;">pass</span></p>
</div>
<p class="yiv5337413704MsoNormal"> </p>
<p class="yiv5337413704MsoNormal">When I run it the VB code the first time, things work great.<span style="">
</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:</p>
<div style="border:solid windowtext 1.0pt;padding:1.0pt 4.0pt 1.0pt 4.0pt;">
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<b style=""><span style="">Exception:</span></b><span style="">
System.AccessViolationException :</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<b style=""><span style="">Message:</span></b><span style="">
Attempted to read or write protected memory. This is often an indication that other memory is corrupt.</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<b style=""><span style="">Source:</span></b><span style="">
Python.Runtime</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<b style=""><span style="">StackTrace:</span></b></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style=""><span style="">
</span>at Python.Runtime.Runtime.PyObject_Call(IntPtr pointer, IntPtr args, IntPtr kw)</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style=""><span style="">
</span>at Python.Runtime.ImportHook.__import__(IntPtr self, IntPtr args, IntPtr kw)</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style=""><span style="">
</span>at Python.Runtime.Runtime.PyObject_Call(IntPtr pointer, IntPtr args, IntPtr kw)</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style=""><span style="">
</span>at Python.Runtime.ImportHook.__import__(IntPtr self, IntPtr args, IntPtr kw)</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style=""><span style="">
</span>at Python.Runtime.Runtime.PyObject_Call(IntPtr pointer, IntPtr args, IntPtr kw)</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style=""><span style="">
</span>at Python.Runtime.ImportHook.__import__(IntPtr self, IntPtr args, IntPtr kw)</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style=""><span style="">
</span>at Python.Runtime.Runtime.PyObject_Call(IntPtr pointer, IntPtr args, IntPtr kw)</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style=""><span style="">
</span>at Python.Runtime.ImportHook.__import__(IntPtr self, IntPtr args, IntPtr kw)</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style=""><span style="">
</span>at Python.Runtime.Runtime.PyObject_Call(IntPtr pointer, IntPtr args, IntPtr kw)</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style=""><span style="">
</span>at Python.Runtime.ImportHook.__import__(IntPtr self, IntPtr args, IntPtr kw)</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style=""><span style="">
</span>at Python.Runtime.Runtime.PyObject_Call(IntPtr pointer, IntPtr args, IntPtr kw)</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style=""><span style="">
</span>at Python.Runtime.ImportHook.__import__(IntPtr self, IntPtr args, IntPtr kw)</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style=""><span style="">
</span>at Python.Runtime.Runtime.PyObject_Call(IntPtr pointer, IntPtr args, IntPtr kw)</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style=""><span style="">
</span>at Python.Runtime.ImportHook.__import__(IntPtr self, IntPtr args, IntPtr kw)</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style=""><span style="">
</span>at Python.Runtime.Runtime.PyObject_Call(IntPtr pointer, IntPtr args, IntPtr kw)</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style=""><span style="">
</span>at Python.Runtime.ImportHook.__import__(IntPtr self, IntPtr args, IntPtr kw)</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style=""><span style="">
</span>at Python.Runtime.Runtime.PyObject_Call(IntPtr pointer, IntPtr args, IntPtr kw)</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style=""><span style="">
</span>at Python.Runtime.ImportHook.__import__(IntPtr self, IntPtr args, IntPtr kw)</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style=""><span style="">
</span>at Python.Runtime.Runtime.PyRun_String(String code, IntPtr st, IntPtr globals, IntPtr locals)</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style=""><span style="">
</span>at Python.Runtime.PyScope.Exec(String code, IntPtr _globals, IntPtr _locals)</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style=""><span style="">
</span>at MyApp.MyClass.Startup(String& param) in C:\Git\MyPath\MyApp.vb:line 132</span></p>
</div>
<p class="yiv5337413704MsoNormal"><span style=""> Unfortunately the stack trace doesn't show line numbers for anything in the Python.Runtime.</span></p>
<p class="yiv5337413704MsoNormal"><span style=""> </span></p>
<p class="yiv5337413704MsoNormal">Interestingly, if you look at the VB code, I have some lines of commented out code:</p>
<div style="border:solid windowtext 1.0pt;padding:1.0pt 4.0pt 1.0pt 4.0pt;">
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"><span style="">
</span></span><span style="font-size:10.0pt;font-family:Consolas;color:green;">'mm.PrintMsg(PythonEngine.BuildInfo)</span><span style="font-size:10.0pt;font-family:Consolas;color:black;"></span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"><span style="">
</span></span><span style="font-size:10.0pt;font-family:Consolas;color:green;">'mm.PrintMsg(PythonEngine.Compiler)</span><span style="font-size:10.0pt;font-family:Consolas;color:black;"></span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"><span style="">
</span></span><span style="font-size:10.0pt;font-family:Consolas;color:green;">'mm.PrintMsg(PythonEngine.Platform)</span><span style="font-size:10.0pt;font-family:Consolas;color:black;"></span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"><span style="">
</span></span><span style="font-size:10.0pt;font-family:Consolas;color:green;">'mm.PrintMsg(PythonEngine.ProgramName)</span><span style="font-size:10.0pt;font-family:Consolas;color:black;"></span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"><span style="">
</span></span><span style="font-size:10.0pt;font-family:Consolas;color:green;">'mm.PrintMsg(PythonEngine.PythonHome)</span><span style="font-size:10.0pt;font-family:Consolas;color:black;"></span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"><span style="">
</span></span><span style="font-size:10.0pt;font-family:Consolas;color:green;">'mm.PrintMsg(PythonEngine.PythonPath)</span><span style="font-size:10.0pt;font-family:Consolas;color:black;"></span></p>
</div>
<p class="yiv5337413704MsoNormal"><br>
</p>
<p class="yiv5337413704MsoNormal">Since the app doesn’t have a console, this sends the text to the enclosing app for display.<span style="">
</span>If I uncommon that code, then the first time I run it I get:</p>
<div style="border:solid windowtext 1.0pt;padding:1.0pt 4.0pt 1.0pt 4.0pt;">
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;">default, Mar 29 2018, 13:32:41</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;">[MSC v.1900 64 bit (AMD64)]</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;">win32</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;">python</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;"> </span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;">F:\Anaconda3\python36.zip;F:\Anaconda3\Lib;F:\Anaconda3\DLLs;C:\MX6</span></p>
</div>
<p class="yiv5337413704MsoNormal"> </p>
<p class="yiv5337413704MsoNormal">And the second time I run it I get:</p>
<div style="border:solid windowtext 1.0pt;padding:1.0pt 4.0pt 1.0pt 4.0pt;">
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;">default, Mar 29 2018, 13:32:41</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;">[MSC v.1900 64 bit (AMD64)]</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;">win32</span></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<b style=""><span style="font-size:10.0pt;font-family:Consolas;color:black;">pyth???</span></b></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<b style=""><span style="font-size:10.0pt;font-family:Consolas;color:black;">???</span></b></p>
<p class="yiv5337413704MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal;border:none;padding:0in;">
<span style="font-size:10.0pt;font-family:Consolas;color:black;">F:\Anaconda3\python36.zip;F:\Anaconda3\Lib;F:\Anaconda3\DLLs;C:\MX6</span></p>
</div>
<p class="yiv5337413704MsoNormal"> </p>
<p class="yiv5337413704MsoNormal">And the application doesn’t crash!<span style="">
</span>Instead it just says the skimage module can’t be found.<span style="">
</span>Notice the bolded lines (bold added after the fact).<span style="">
</span>The program name and python home values are being corrupted.</p>
<p class="yiv5337413704MsoNormal">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?</p>
<br>
<p></p>
<p style="margin-top:0;margin-bottom:0;"><br>
</p>
<div id="yiv5337413704Signature">
<div id="yiv5337413704divtagdefaultwrapper" dir="ltr" style="font-size:12pt;color:rgb(0, 0, 0);font-family:Calibri, Helvetica, sans-serif, EmojiFont, Color UI NotoColorEmoji, UI EmojiSymbols;">
<p style="margin-top:0;margin-bottom:0;"></p>
<p class="yiv5337413704x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri, sans-serif;color:rgb(33,33,33);">
<span style="font-size:10pt;font-family:Arial, sans-serif, serif, EmojiFont;">Steve</span></p>
<p class="yiv5337413704x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri, sans-serif;color:rgb(33,33,33);">
<br>
</p>
<p></p>
</div>
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