Hi, I think the "JSF library" feature is only for defining the JSF standard implementation, but not for libraries built upon JSF. So, you need two steps: 1) create a JSF library in eclipse with the option "server supplies implementation" (JBoss contains Mojarra) and choose your JBoss server runtime. Here are two eclipse screenshots which will hopefully help (on a german page): http://www.informatik.fh-wiesbaden.de/~knauf/KomponentenArchitekturen2008... Beware to upgrade Eclipse/WebTools to 3.4.2, because in previous versions the classpath to the JSF libs was wrong. 2) drop the Richfaces JARs in WEB-INF\lib (without any further configuration) This should do it Wolfgang View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4227427#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...