Can't build project "System.Reflection.ReflectionTypeLoadException "

When I try to build my project for flash I get this error:

Code (csharp):

1. Internal compiler error. See the console log for more information. output was:
2. Unhandled Exception: System.Reflection.ReflectionTypeLoadException: The classes in the module cannot be loaded.
3.   at (wrapper managed-to-native) System.Reflection.Assembly:GetTypes (bool)
4.   at System.Reflection.Assembly.GetTypes () [0x00000] in <filename unknown>:0
5.   at Mono.CSharp.RootNamespace.ComputeNamespaces (System.Reflection.Assembly assembly, System.Type extensionType) [0x00000] in <filename unknown>:0
6.   at Mono.CSharp.RootNamespace.ComputeNamespace (Mono.CSharp.CompilerContext ctx, System.Type extensionType) [0x00000] in <filename unknown>:0
7.   at Mono.CSharp.GlobalRootNamespace.ComputeNamespaces (Mono.CSharp.CompilerContext ctx) [0x00000] in <filename unknown>:0
8.   at Mono.CSharp.Driver.LoadReferences () [0x00000] in <filename unknown>:0
9.   at Mono.CSharp.Driver.Compile () [0x00000] in <filename unknown>:0
10.   at Mono.CSharp.Driver.Main (System.String[] args) [0x00000] in <filename unknown>:0
11.  

Has anyone got an idea what's going on here? The game runs fine on all other platforms.

 

anyone?

 

Does it also work for the web target?

Do you have only source code or also libraries in your project?

 

I use Prime31 plugins for iOS Mac. I guess I can remove them and see what happens.

 

removing all plugins fixed it.