by the way: I have found this problem when I tryed to install jboss-messaging. After making all steps: messging does not work - I suppose this is the result of those exceptions. And all this steps were made on linux box. Today I have tryed the same steps on Windows. And everything woks perfect: 1. default jboss starts without error 2. messaging starts without errors 3. messaging samples work perfect is any way to resolve exception id default jboss pack? thanks View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4189740#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...