Based on the stack trace, you must be using an ancient version of Seam! ;)
That exception has been fixed recently in CVS, I recommend you get the Seam 2.0.0CR2
release or wait for GA.
View the original post :
http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4099090#...
Reply to the post :
http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...