http://bugs.winehq.org/show_bug.cgi?id=31993
--- Comment #4 from Erich Hoover ehoover@mines.edu 2012-10-18 10:39:44 CDT --- Ok, just a quick digging into this indicates that the problem may be related to an exception: 0046:Call KERNEL32.WideCharToMultiByte(0000fde9,00000000,05f58fc0 L"System.Collections.Generic.KeyNotFoundException: [Arg_KeyNotFound]\r\nArguments: \r\nDebugging resource strings are unavailable. Often the key and arguments provide sufficient information to diagnose the problem. See http://go.microsoft.com/fwlink/?linkid=106663&Version=4.1.10329.0&Fi...) ret=0169ebd5
This occurs almost immediately after trying to work with a strange URL: pack://application/Netflix.Silverlight.CBPApp;component/Effects/BrightnessContrast.ps which distinctly has no entry in PROTOCOLS\Handler\pack ...
I probably won't have time to look into this much more for a few weeks, but this seems like a good place to start if anyone else has some time.