Hmm from the exception I see objectweb.asm lib?
Do you mix your Client and Server Module?
You received this message because you are subscribed to the Google Groups "GWT Users" group.
To unsubscribe from this group and stop receiving emails from it, send an email to firstname.lastname@example.org.
To view this discussion on the web visit https://groups.google.com/d/msgid/google-web-toolkit/aeb93d90-5183-4c6a-bc0a-a8678bdc4c3e%40googlegroups.com.