anonymous wrote : If you try to load each and every optional component without having all the optional libraries, you will have problems. What optional component could I be loading here? And since there is no documentation for Seam UI, how am I supposed to know which libraries I need, even if I DID want to load them? As I explained, I did not use <s:cache> or anything that would require the use of JBoss Cache. I just wanted to test form submission. What optional components does that need? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3992452#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...