Most likely, the working application has a valid welcome-file-list, or some redirect.
Without seeing the web.xml, it is hard to tell.
View the original post :
http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4100701#...
Reply to the post :
http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...