Which Manifest.mf do you mean ? The one from the EAR ? They are both empty : Manifest-Version: 1.0 | Class-Path: Well...i created an lib Folder in the EAR and put all jar's in it. And now everything works in the new Project. But i dont know why the old Project works when there all jar's are just in the root of the EAR and not in a lib-Folder ? Anyone can explain this :)? View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4231827#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...