Do you have an uncaught exception handler registered using GWT.setUncaughtExceptionHandler() to see if any unexpected exception has occurred?
If that does not give any information you could compile your app in PRETTY mode so you can see all the java method names (DETAILED also gives your package names if you need them to find the JS method). Using Chrome DevTools / FireFox FireBug you get a pretty good idea whats going on and where to set break points. That way you should definitely get some information. As it works in DevMode and HashMap.clone() is emulated by GWT I would think its a bug but having some additional information never hurts :-) -- J. -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To unsubscribe from this group and stop receiving emails from it, send an email to google-web-toolkit+unsubscr...@googlegroups.com. To post to this group, send email to google-web-toolkit@googlegroups.com. Visit this group at http://groups.google.com/group/google-web-toolkit?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
