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<p class=MsoNormal><span style='color:#1F497D'>Do you have .NET 2.0 installed
as well as .NET 4.0? .NET 2.0 and .NET 4.0 are side by side releases. While
IronPython built for .NET 2.0 would probably run fine on .NET 4.0 we haven’t
done any testing to make sure that’s the case. Additionally it would cause a
lot of confusion because we have been putting out .NET 4.0 compatible releases
which use new functionality that we usually ship as part of IronPython
(Microsoft.Scripting.Core – the portions of the DLR shipping in .NET 4.0). Therefore
lots of people would probably try and use C#/VB.NET’s new dynamic support to
talk to IronPython and it would fail but it wouldn’t be entirely obvious why it’s
not working.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>You should just be able to
install .NET 2.0 SP1 in addition to 4.0 and things should work.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>.NET 4.0 is certainly a later
version and that’s why the message explicitly calls out that .NET 4.0 isn’t
supported </span><span style='font-family:Wingdings;color:#1F497D'>J</span><span
style='color:#1F497D'> It means later in the 2.0/3.0/3.5 series of runtimes
which are all in place upgrades.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
users-bounces@lists.ironpython.com [mailto:users-bounces@lists.ironpython.com] <b>On
Behalf Of </b>David Waller<br>
<b>Sent:</b> Monday, December 14, 2009 9:47 AM<br>
<b>To:</b> users@lists.ironpython.com<br>
<b>Subject:</b> [IronPython] IronPython 2.6 final and net 4<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span lang=EN-GB>Hello,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB>I have been using earlier versions of
IronPython 2.6 (not sure exactly which version) without any major issues. I
have recently tried to install the latest 2.6 final and it complains about
“requires .NET Framework 2.0 SP1 or later. NET 4.0 is not supported”. I have
installed .NET 4.0 as part of the Visual express 2010 software. Is there any
way I can convince IronPython to update itself without uninstalling the visual
express software. <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB>Also isn’t .NET 4.0 a later version of .NET
2.0<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
<p class=MsoNormal><b><span lang=EN-GB style='font-family:"Adobe Jenson Pro";
color:#548DD4'>Thanks<o:p></o:p></span></b></p>
<p class=MsoNormal><b><span lang=EN-GB style='font-family:"Adobe Jenson Pro";
color:#548DD4'>David Waller<o:p></o:p></span></b></p>
<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
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