I tried 2.7.0CR1 and got the same error What is TX Type? maybe I already have some conflicting libraries in my classpath. Any ideas? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4179246#4179246 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4179246