Didn't work for me.

Mar 31, 2011 at 9:58 PM

The call to LoadLibrary(C:\DebuggingExtentions\wct_VS2008.dll) failed, Win32 error 0n193
    "%1 is not a valid Win32 application."

Coordinator
May 1, 2012 at 6:15 AM

You are probably using a 64-bit version of the debugger with the 32-bit version of the extension. This is not supported by Windows.