Hi all, I'm trying to deploy simple web app with Sun JSF 1.2_04-b16-p02 and I've got the following exception (if I deploy to Tomcat or if I create web application in IntelliJIdea with no JSF support attached, everything works fine). Any idea to solve this ? Many thanks in advance. David Exception got: 2007-12-10 15:28:47,421 FATAL [javax.enterprise.resource.webcontainer.jsf.application] JSF1029: The specified InjectionProvider implementation 'org.jboss.web.jsf.integration.injection.JBossInjectionProvider' does not implement the InjectionProvider interface. 2007-12-10 15:28:47,421 INFO [javax.enterprise.resource.webcontainer.jsf.application] JSF1048: PostConstruct/PreDestroy annotations present. ManagedBeans methods marked with these annotations will have said annotations processed. 2007-12-10 15:28:47,515 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[localhost].[/Web]] Exception sending context initialized event to listener instance of class org.jboss.web.jsf.integration.config.JBossJSFConfigureListener java.lang.ClassCastException: com.sun.faces.config.WebConfiguration cannot be cast to com.sun.faces.config.WebConfiguration at com.sun.faces.config.WebConfiguration.getInstance(WebConfiguration.java:135) at com.sun.faces.config.ConfigureListener.contextInitialized(ConfigureListener.java:228) at org.jboss.web.jsf.integration.config.JBossJSFConfigureListener.contextInitialized(JBossJSFConfigureListener.java:69) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3856) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4361) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:790) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:770) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:553) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4111650#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...