Hi Peter, thanks that helped. I also had to add trove.jar in the same directory. Thanks! Sebastian View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4025485#4025485 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4025485