Hi Kiran, Thanks for the quick response. As i said earlier, I have only one jdk in my system. 1.5.0._07 anonymous wrote : | C:\>echo %JAVA_HOME% | C:\Program Files\Java\jdk1.5.0_07 | anonymous wrote : C:\>java -version | java version "1.5.0_07" | Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_07-b03) | Java HotSpot(TM) Client VM (build 1.5.0_07-b03, mixed mode, sharing) Eclipse also points to the same. More over I am getting this exception only during ejb deployment. When i remove this ejb.jar from the ear, The other war files are properly deployed and functioning as well. When i try to deploy a ejb jar ( both via an ear or separately i am getting this problem ). I am kind of stuck over here. Thnx Vasu View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4172868#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...