"max.andersen(a)jboss.com" wrote : My guess is more that when you did ant deploy the META-INF/persistence.xml showed up in the right place. well I just tested your hypothesis and you are correct. It works with explode or deploy as long as persistence.xml is located here: BETS\exploded-archives\BETS.jar\META-INF and you just use the default classpath in the edit launch config properties classpath tab. not sure what happened yesterday that it was missing or unable to locate... View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4217530#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...