Yup, the injection of UserTransaction is a bug. It should always happen by lookup into JNDI. "adrian(a)jboss.org" wrote : It's populated when it's populated, which could be never if there are no listeners configured. | So the NPE is wrong. That's ludicrous, the UserTransactionRegistry should always be regardless of listeners. The UserTransactionRegistry itself has the check for an empty listener list. So configuration error. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4193452#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...