I tested CVS on a windows machine and it built fine. Can you try with a checkout of Seam from CVS? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4114749#4114749 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4114749