I've seen some questions about how to run Seam with the 1.2 RI. So here are step-by-step instructions for JBoss AS. (I also need to put together instructions for glassfish). (1) copy jsf-api.jar, jsf-impl.jar, el-api.jar, el-impl.jar to server/default/deploy/tomcat/jbossweb-tomcat55.sar/jsf-libs (2) delete myfaces-xxx.jar from that folder (3) Edit server/default/deploy/tomcat/jbossweb-tomcat55.sar/conf/web.xml, replacing "myfaces-api.jar" with "jsf-api.jar". (4) edit examples/booking/resources/WEB-INF/web.xml, commenting the MyFaces listener, uncommenting the RI listener (5) remove el-*.jar from examples/booking/resources/WEB-INF/lib View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3985607#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...