Hi I've just installed SiteMesh1.5 on Jboss3.0(Jetty Plugin) by copying these files to <jboss.home>/server/default/deploy : - xalan.jar - jaxp.jar - sitemesh-manual.war But I could not access to http://localhost:8080/sitemesh-manual While this exception is thrown: java.lang.IllegalStateException: getOutputStream called Is it a bug ? Could you help me ? It is urgent