As you set, I had others jboss*.jar files in my classpath. I delete de reference and the problem has gone. Thanks a lot View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3973277#3973277 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3973277