I've managed to run my app now.
The error was caused by Debug.WriteLine, when the assemblyname equals mscorlib.resources.dll.
When commenting out the Monitor.Start line, then this Assembly is never requested. So maybe an error in analytics.dll?
My solution was commenting out the Debug.WriteLine and now everthing works fine (I have no ressources-Assemblies).
sender, ResolveEventArgs args)
//causes the error, when assemblyName == mscorlib.resources.dll