Can anyone give me a clue on what this error message means?

"RemoteException: performUpdate caught java.rmi.MarshalException: CORBA MARSHAL 1398079699 Maybe; nested exception is: org.omg.CORBA.MARSHAL: Unable to read value from underlying bridge : Invalid indirection to offset 4948 minor code: 1398079699 completed: Maybe"

I'm using Sun's J2EE RI with the MVC architecture and I get this when I am retrieving my model from my EJB.
Thanks in Advance,
Art