Hi, Try a clean install again and follow the steps here http://labs.jboss.com/portal/jbossaop/docs/1.5.0.GA/docs/aspect-framework... At a glance, what you have done looks ok, apart from that you should not anonymous wrote : | -copied the contents of the lib50 folder to the lib folder of the jboss installation | I am not sure about the first exception, but the second looks like a bug. Please see if you can isolate what causes the error. BTW, the dist comes with a tutorial example called "injboss" that can be used to verify that you have set everything up correctly. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3965483#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...