"thejavafreak" wrote : What JBoss version are you using? Try using JBoss 4.0.5 and don't add myfaces library in WEB-INF/lib. I'm using 4.0.5GA. Like I said, we had to remove the myfaces libraries from jbossweb-tomcat55.sar\jsf-libs because they conflicted with the JSF libraries used by other web applications we already have deployed. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4101368#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...