Please post more details. Which JBoss AS version are you using and which Java version? Where in the EAR have you placed the jar? Also please post the entire exception stacktrace. 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. And please hit the Preview button before posting, to ensure your post is correctly formatted. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4195801#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...