Hi,

I've found what I think is a "simpler" and more "general" solution for the ExecutionEngineException on events compiled with Visual Studio.

You can simply replace any call to the generic version of CompareExchange:
call !!0 [mscorlib]System.Threading.Interlocked::CompareExchange(!!0&, !!0, !!0)

With a call to the non-generic version:
call object [mscorlib]System.Threading.Interlocked::CompareExchange(object&, object, object)

You can safely do the same for calls to Interlocked::Exchange. You'll maintain thread-safety, and (surprisingly) it works on all platforms (at least for trusted code).

Greatings.