As far as I can see in server MethodMetaData is instantiated either in ApplicationMetaData or in the EjbJarObjectFactory. In the new project ApplicationMetaData is only a delegator, which instantiates (indirectly) subclasses of org.jboss.metadata.MethodMetaData as delegators, so the EjbJarFactory needs to use the new model and create the ApplicationMetaData delegator instead. It should work, but shouldn't we ditch all the old stuff? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4085939#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...