anonymous wrote : java.lang.NullPointerException | at com.mypackage.services.jdo.JDOService.get(Unknown Source) The NullPointerException is coming from com.mypackage.services.jdo.JDOService class, which does not belong to JBoss. You will have to look into the code of the get method in this class to understand which line is throwing this exception and why. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4170271#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...