Visual Studio 2008 Designer crashes when editing WPF xaml…

I have been banging my head on the wall about my Visual Studio just disappearing from view whenever I open one of my WPF forms. As you can imagine, this puts a pretty big cramp in development efforts when you can never use the designer.

I looked in my event viewer and found this error hanging out.

Event Type:	Error
Event Source:	.NET Runtime
Event Category:	None
Event ID:	1023
Date:		3/10/2010
Time:		11:03:02 AM
User:		N/A
Computer:	BSEEKFORD00111
.NET Runtime version 2.0.50727.3603 - Fatal Execution Engine Error (7A2E10D2) (0)

For more information, see Help and Support Center at

The resolution is that it turns out your probably installed Power Commands for Visual Studio 2008. You can uninstall them, which sucks. Or you can apply a really easy patch.

Go to your devenv.exe.config file sitting in your Program FilesMicrosoft Visual Studio 9Common7IDE

Add this to the bottom of the dependent assemblies section:


<assemblyIdentity name="Microsoft.PowerCommands" publicKeyToken="null" culture="neutral"/>

<codeBase version="" href="C:Program FilesPowerCommandsMicrosoft.PowerCommands.dll"/>


Start Visual Studio back up and rock on.

Note: Make sure the path you enter matches where everything is installed. DUH!

Credits to these guys for all their help.

Happy Coding!

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