I'm the old maintainer of JBoss AOP IDE. (no longer active on this project) What I do know is that a recent API change in eclipse has changed the process for supporting source lookup, which means it's most likely a simple error. I'll look into it now for you, and if it's a simple fix I'll commit it to CVS. It will not make it into this week's JBoss IDE release at all, however if the problem is as simple as I believe it is, I will try to ensure it is in 2.0. Sorry for the change, but it was upstream of us. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3957832#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...