I usually use JBuilder 2005 (and now 2006) to develop enterprise application. I developed a lot of application (simple demo applications and not). Usually I created a web application where a servlet or a bean calls an EJB to perform the business logic. I usually packed this enterprise application in an EAR file. Until the JBoss 4.0.1SP1 I had not problems, now with JBoss 4.0.2 and 4.0.3 I have big problems. The problem is in the creation of the home interface that is null. The same application (the same EAR) deployed in the JBoss 4.0.1SP1 works and deployed in JBoss 4.0.2 doesn't work!!!