How do I fix this Compiler Error?

Hi i got an Error and don’t know how to fix it. this is the Error:

“Internal compiler error. See the console log for more information. output was:BCE0011: An error occurred during the execution of the step ‘Boo.Lang.Compiler.Steps.EmitAssembly’: ‘Empty name is not legal
Parameter name: fullname’.”

Can someone help me ?

This is often because you try to store an object in the array that just not of the type that the array can hold, in that case the cast will fail and you get this and similar errors backfiring. If that doesn’t help please upload code.