Thanks for the links, Weston. I went throug these before, but I still can't understand why I have to put struts.jar lib into both .../server/default/lib and WEB-INF/lib (part of war archive) directories. Somehow some struts .tld cannot be found if I put it only in .../server/default/lib and some other strut classes cannot be found if I only put it in WEB-INF/lib. So, I just have a simple question. Shouldn't any library be normally visible if I put it into .../server/default/lib? What's the best way to trace where the classes are actually loaded from. I would really appreciate a few tips. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4044138#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...