Seam CVS uses jboss-el not el-ri. seam-gen should create you a correct application, or take a look at one the examples. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4042840#4042840 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4042840