Do you have the required jars deployed properly? Your best bet is to use seam-gen or one of the examples and then compare the exploded ear to the one you are generating. I'm using the same configuration you are "I'm using Seam2.0 beta & Glassfish server 9.1. I'm using Netbeans IDE5.5.1. " and it took a bit of tweaking to get it to work properly. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4072661#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...