Hello, I used several basic examples to test Jboss, specially a basic hello word session EJB (example3 on www.reoseindia.net/jboss). Everithing is ok with Jboss 4.0.0 and jboss4.0.1. I also tried examples from the book "Jboss at work) everything works fine. If I use later Jboss versions (4.0.2, 4.0.3, 4.0.4) i get an exception while droping example3.ear in the Jboss deploy directory. What are the new features which cause that exception Thank's a lot for an help Christian View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3974799#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...