Most likely this is the problem. I have deleted all the files and downloaded this instead; Jboss Application Server 5.0.1.GA Jboss Tools 3.1 Milestone 1 Eclipse 3.5 I will try to install all this instead from scratch. You know a page or two where i can read and follow the instructions on how to install all this in the correct way? I have also made a new topic about this so maybe we can stop this one and concentrate on the new one instead. Thank you again for all your help so far. Anybody who can help me with this? I am fairly new to all this so i would need some help to learn how to install all this in the right way on a Mac 10.5.7 . View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4237421#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...