Hmm, no edit function here. Anyway, I just realize that it does not make sense to manually change that in the preferences. I thought eclipse would load the seam libraries from the runtime location when deploying. But if I understood you right, this has nothing to do with the runtime setting. So I have to switch to the new libraries in the build path. Sorry for my noobity. ;) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4092582#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...