I guess it would help if I used the proper search string when looking for classes. The missing method, scanWebXml, is actually in the base class ConfigureListener in the package in the same JAR file. And the server/xxx/deploy/jboss-web.deployer/jsf-libs/jsf-impl.jar file contains the ConfigureListener class, and guess what method it is missing? Anyway, make sure that you do not include the jsf-impl-xxx.jar, or jsf-api-xxx.jar in your web app. (And alternative might be to replace those files in the jsf-libs directory with yours...) View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4250432#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...