I am using JBoss AS 5 beta 3 (so MC beta 9) with the changes in the bootstrap config that activates the MC classloading mechanism. I tried to have the AS 5 beta 3 running with the trunk version of MC but it failed on startup... I will try at some point against a trunk of MC (although I will need to somehow bootstrap enough of it to have things like VFS) or perhaps against JBoss AS beta 4 when it comes out... View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4129077#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...