After some more changes I am now getting: java.lang.IllegalArgumentException: Class org.jboss.seam.ui.facelet.SeamFaceletViewHandler is no javax.faces.application.ViewHandler | In my entire experience with JBoss and Seam, about 40% of the project time has been spent working on config files and jar files. It seems like a powerful tool but getting it to actually work without throwing exceptions is almost half the battle. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3996255#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...