i use version 2.1.0-1 the last one... for now. I have a response from gwt-maven-plugin team :
The new release (2.2.0) will mostly only upgrade plugin dependencies, so don't expect a fix. >From my understanding of the stacktrace, GWT Designer don't support using the M2E Classpath container. There's nothing we can do to fix this. -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. 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.