In the seam faq it says: Refer to this blog post on how to run Seam in Sun's Glassfish application server:http://weblogs.java.net/blog/bleonard/archive/2006/06/running_jbos... This blog is based on Seam 1.2.1 , I can successfully deploy this registration app with seam 1.2.1 on Glassfish, but when I run the same app with Seam 2.0 it does not deploy on Glassfish. What do I need to change to run this Application with Seam 2.0 (with JSF RI (not facelets) , EJB3 , and JPA toplinke) on Glassfish? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4121131#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...