UPDATE: after try catching in my AbstractClientFactory i found something:
protected EventBus createEventBus() { return new SimpleEventBus() { @Override public void fireEvent(Event<?> event) { try { LOG.debug("#fireEvent(Event<?> event): " + event != null ? event.toDebugString() : "null"); super.fireEvent(event); }catch(Exception e){ LOG.error("fire event failed: " + e.getCause().getMessage()); } } @Override public void fireEvent(GwtEvent<?> event) { try { LOG.debug("#fireEvent(GwtEvent<?> event)" + event != null ? event.toDebugString() : "null"); super.fireEvent(event); }catch(Exception e){ LOG.error("fire gwtevent failed: " + e.getCause().getMessage()); } } }; } like you said the inner class (in this case the new SimpleEventBus) is the problem. fireEvent(Event<?> event) runs in my catch method. Problem is that the exception just says that i should check the umbrella exception for the cause. I don't know how to get this one? Or is this the point where i should place my GWT.setUncaughtExceptionHandler? -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To view this discussion on the web visit https://groups.google.com/d/msg/google-web-toolkit/-/v95As2zE_kcJ. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.