I also have the same problem. It seems that the problems arise from the naming of beans! Please see the attached image which was generated by the server.
you cannot use slash in ejb names anymore
I got just the same problem and found help in this topic: http://www.jboss.org/modules/bb/index.html?module=bb&op=viewtopic&t= all it was a piece of hard work and the output is not like described in the Getting Started documentation.