David, could you have a look at the following issue ? I have tried to deploy the standard java web console on tomcat. I added the necessary libraries (amongst others, jbossretro-rt.jar, backport-consurrent.jar and commons-logging.jar) to the console.war and then delpoyed to tomcat. Then i got this stack trace: I used tomcat 6.0.0. SEVERE: Exception sending context initialized event to listener instance of class com.sun.faces.config.ConfigureListener | java.lang.LinkageError: loader constraints violated when linking javax/el/ExpressionFactory class | at com.sun.faces.config.ConfigureListener.registerELResolverAndListenerWithJsp(ConfigureListener.java:1712) | at com.sun.faces.config.ConfigureListener.contextInitialized(ConfigureListener.java:513) | at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3826) | at org.apache.catalina.core.StandardContext.start(StandardContext.java:4335) | at org.apache.catalina.startup.HostConfig.checkResources(HostConfig.java:1104) | at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1202) | at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:292) | at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119) | at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1305) | at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1569) | at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1578) | at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1558) | at java.lang.Thread.run(Thread.java:595) | Do you have the same problem deploying on tomcat ? Could you have a look at this ? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3985356#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...