Thanks for the info. I can go astep further. But now I get another exception as follow, seems it is a problem of compatability: Caused by: java.io.InvalidClassException: org.jboss.ejb3.LocalProxy; local class incompatible: stream classdesc serialVersionUID = -6521545933800264895, local class serialVersionUID = -7089389644057030711 at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:546) at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1552) at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1466) at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1552) at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1466) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1699) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1908) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1832) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1719) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:348) at java.rmi.MarshalledObject.get(MarshalledObject.java:135) at org.jnp.interfaces.MarshalledValuePair.get(MarshalledValuePair.java:72) at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:654) ... 3 more View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4149325#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...