Strange, strange... I installed a new eclipse with the plugin, there it worked... But no it broke again :-/ The exception appears in the log AND on the designer pane. No additional information in the logs. The processdefinition.xml is valid, it can even get deployed. I deleted the gpd.xml (which normally worked if you really get problems), but that doesn't change anything... Any further ideas what's wrong here? And sorry for not responding: Didn't watched the topic for replies! Changed :-) Cheers Bernd View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4181263#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...