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How to fix mscorlib exception: Unrecognized OS PlatformId.

2 New Member
On my dev machine Silverlight applications won't run out of browser. I get a blank window. The apps run fine in the browser and on other machines in or out of the browser. This happens with my apps, other people's apps, brand new VS2010 projects, etc.

A bit of digging revealed that the OOB app causes an Unrecognized OS PlatformId exception in mscorlib. Presumably this prevents it from executing.

I reinstalled all Silverlight components including all VS2010 components and the SDK. This made no difference. Wiping the whole machine would probably fix the problem, but I'd prefer to avoid this for the obvious reason that reinstalling it is a lot of work.

Does anyone have suggestions for how to troubleshoot this problem or should I just bite the bullet and redo the machine?

Thank you!

Martin
Feb 18 '11 #1
1 1964
mgremm
2 New Member
The source of the problem turns out to be a corrupted user profile (http://social.answers.microsoft.com/...9-50dbe7e30759).
Feb 22 '11 #2

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