What does that jar contain? And where exactly did you paste it in JBoss? And please post the console logs and the exception stacktrace. And when does this exception occur, during deployment time or when you access your application? While posting logs or xml content or code, please remember to wrap it in a code block by using the Code button in the message editor window. Please use the Preview button to ensure that your post is correctly formatted. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4221221#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...