I'm trying to get some experience with JBoss 5 by trying out the examples from the Sun Java 5 EE tutorial (http://java.sun.com/javaee/5/docs/tutorial/doc/gfiud.html). However when I try to deploy either bookstore1 or bookstore2 on a standaard JBoss 5 all configuration I get the following error: 2008-12-11 21:02:38,171 ERROR [org.jboss.web.tomcat.service.deployers.TomcatDeployment] (http-127.0.0.1-8080-1) ENC setup failed | java.lang.NullPointerException | at org.jboss.injection.PersistenceUnitHandler.getEntityManagerFactory(PersistenceUnitHandler.java:167) | ... I can't find many references to ENC. What is ENC? And how do I get it to work? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4196055#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...