The EJB 3.0 RC9 Patch 1 implementation is only usable with JBoss 4.0.5.GA. The patch has been released to provide compatibility with the full (non-installer) release for JBossAS 4.0.5. The patch also corrects a problem with the installer version that caused hot redeploys to fail with a classloading issue. You can download the RC9 patch 1 release here: http://sourceforge.net/project/showfiles.php?group_id=22866&package_i... Please follow the instructions in INSTALL.html to install the patch. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3995565#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...