It uses the client/jnp-client.jar that contains no org.jnp.server classes: View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4191044#4191044 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4191044