JB 3.0 Preview RC9 only works with JBoss 4.0.4.GA. An ANT build script has been supplied to patch an existing JBoss 4.0.4.GA distribution. * download ANT from apache.org if you don't have it already * set a JBOSS_HOME environment variable to point to the directory JBoss is installed in $ cd jboss-EJB-3.0_RC9-FD $ ant -f install.xml -Djboss.server.config=[server directory you want to patch] View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4001791#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...