This issue is noted on a sticky post by Gavin King, and is (theorically, haven't tested it personally) fixed in CVS version. I put dtd on jboss's bin directory, because when I removed the path from jboss.com/bla/bla/dtd to only dtd, parser complained not being able to found it on java's classpath, so I just put it there. There is also a difference between pages-1.1.dtd and pages-1.2.dtd from the jar's taglib reference, don't know wich one might be the one causing trouble, I put both in there ;) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4046545#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...