what means "Invalid IL code"?

[JPT]

does this point towards who should be responsible for fixing this: wine, mono or the software author?

Code: Select all

fixme:win:EnumDisplayDevicesW ((null),0,0x33e868,0x00000000), stub!
fixme:win:EnumDisplayDevicesW ((null),0,0x33eb68,0x00000000), stub!
fixme:ddraw:ddraw7_Initialize Ignoring guid {aeb2cdd4-6e41-43ea-941c-8361cc760781}.
Unhandled Exception:
System.InvalidProgramException: Invalid IL code in <Module>:?A0xb83d6763.BorderControlStringProc (FilterActivation*,FilterFunctions*,sbyte*): IL_0037: ret       
    at (wrapper native-to-managed) <Module>.?A0xb83d6763.BorderControlStringProc (FilterActivation*,FilterFunctions*,sbyte*) <0x00067>

Or is it just missing .NET/Mono?
How do I find out which is installed? (I did not install any manually)
Which version should I try?

thanks

[JPT]

I created a 32-bit prefix and installed .NET 2.0. This solved the problem.

Error messages like this seem to indicate a missing .NET. I don't know if there is a way to find out which .NET version is required.