java.rmi.MarshalException Corba Bad_Param - anybody?????????????????? pls

[Glenn Dickson]

Hi! Just wanted to know if anyone has ever come a across the error :              java.rmi.MarshalException Corba Bad_Param   Stateless Bean --------------------- My stateless session bean (CmdProcessor) has a method signature of : CmdProcessor.Process (ICommand aCmd) Client -------- My client creates the object (it implements the ICommand interface) : CreateCmd c = new CreateCmd() (CreateCmd implements the java.io.Serialization class) The client calls the Process method in the session bean like so passing the : CmdProcessor.Process (CreateCmd) I receive the MarshalException error message. Now using Abstract Class ------------------------------- It works if I replace the CmdProcessor.Process (ICommand aCmd) with an object and make the CreateCmd EXTEND AbstractCmd: CmdProcessor.Process (AbstractCmd aCmd) Is it that I cannot use an interface class with EJB method ??? What is the cause of this MalshalException error ? Any ideas would be appreciated. Thanks in advance Glenn