I constantly get these errors when deploying to appengine. Although the development mode works:
java.io.IOException: Error posting to URL: https://appengine.google.com/api/appversion/deploy?app_id=errai-demo&version=1& 400 Bad Request Client Error (400) The request is invalid for an unspecified reason. -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.