Must use Facelets 1.1.15 for JBoss AS 5.0.0.GA. Works fine with Richfaces 3.2.2.SR1. Tested. Your WEB-INF\lib may have only these: commons-beanutils commons-codec commons-digester commons-lang commons-validator jsf-facelets oro richfaces-api richfaces-impl richfaces-ui and MUST NOT HAVE xerces, commons-logging, xml-apis,jsf-impl,jsf-api. Enjoy! More info in http://blog.javarnd.com/ View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4198201#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...