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Editorial Team
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Asked: 2026-05-20T02:21:47+00:00

My computer blue screened. After my computer restarted, I ran my Silverlight application and

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My computer blue screened. After my computer restarted, I ran my Silverlight application and got this error:

Could not load file or assembly ‘AsyncCtpLibrary’ or one of its dependencies. The parameter is incorrect. (Exception from HRESULT: 0x80070057 (E_INVALIDARG))

I actually got a couple of errors regarding RIA services not being able to generate code because a directory name had invalid characters. I cleared that up by deleting everything in the bin and obj directories. Clearly there is something corrupt.

I’ve pulled the DLL back down and set it to copy local and I still get that error, only after I run the program. I’m not sure if it’s something where the DLL is corrupt in the GAC or something like that.

EDIT: After reinstalling the Async CTP DLL and checking the GAC, I decided to turn on Assembly Binding logging which gave me this information (along with a lot more).

ERR: Failed to complete setup of
assembly (hr = 0x80070057). Probing
terminated.

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1 Answer

  1. Editorial Team

    Okay, so I figured it out. I had to delete everything in this directory: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\root\

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