anonymous wrote : java.lang.NullPointerException | at org.jboss.mx.util.MBeanServerLocator.locateJBoss(MBeanServerLocator.java:43) Are you sure you are using the correct version of JBoss? Or are you packaging any older version of JBoss jar files with your application? The line number 43 does not match with the locateJBoss method in MBeanServerLocator of JBoss-4.2.2 GA source code. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4154156#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...