Check that your C# source compiles and that you are not using an unsupported feature.
Whoops. Didn't find much around and on good ole' Google, so I didn't have much of an option. Turns out, I was using namespace-qualified types like so:
Sys.Debug.Trace( "foo" );
Just change your code to:
And the compiler should be happy again.
Script# is a great tool to add to your tool belt along with MS AJAX and jQuery. The Script# suite isn't exactly full-feature-tested compiler yet, but it's getting there! Thanks again Nikhil Kothari!
Hope that helps!