if you selected Seam 1.2 as the facet then it won't let you use 2.0. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4141624#4141624 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4141624