Unable to create reference: org.omg.CORBA.OBJ_ADAPTER

Question

What is causing this error? I believe it is a configuration error, but I cannot discern what it is.
Setup:
I have two beans: a User entity bean, and a UserWrapper stateful session bean.
Execution:
My testing client-code looks up the UserWrapper EJB and creates a new object. In the UserWrapper ejbCreate method I am attempting to obtain a reference to a specific User by looking up the User EJB and calling its findByPrimaryKey method.
Everything works fine right up until the UserWrapper.ejbCreate method is ready to close; I catch this exception:
RemoteException occurred in server thread; nested exception is:
java.rmi.RemoteException: nested exception is: java.lang.RuntimeException:
Unable to create reference org.omg.CORBA.OBJ_ADAPTER: vmcid: SUN minor code: 1015 completed: No;
Observations:
User.ejbFindByPrimaryKey(UserPK pk) is NOT throwing ANY EXCEPTIONS! The error is passed to UserWrapper.ejbCreate from the container, or so it seems, but I am relatively positive it is not orginiating from the finder method. At this time the User.ejbFindByPrimaryKey method only returns the primary key object.
UserWrapper.ejbCreate code:
public void ejbCreate(String usrnm, String pswrd) throws CreateException {
  // instance variables
  UserHome userHome = null;
  // implementation
  try {
    // obtain an instance of the EJBHomeFactory and have it return an
    // instance of the UserHome interface
    userHome = (UserHome)EJBHomeFactory.getInstance().lookup(
        "ejb/User", net.cmpro.app.entity.user.UserHome.class);
    // request the container supply a User object for the specified
    // primary key object
    this.user = userHome.findByPrimaryKey(new UserPK(usrnm, pswrd));
  catch(FinderException e) {
    throw new CreateException(e.toString());
  catch(RemoteException e) {
    throw new EJBException(e.toString(), e);
}Need a little help here. I'm getting very frustrated because I've never had this problem before.
Thanks for any advice, no matter how off the wall it is.

Answer 1

Yes, it is. This returns an EJBHome object from a cache. I picked this up from the IBM website. It is very handy. The method in question is as follows:
public EJBHome lookup(String jndi, Class home) throws EJBException {
  // instance variables
  EJBHome ejbHome = null;
  Object obj = null;
  // implementation
  try {
    // looks for the interface in the collection by class
    ejbHome = (EJBHome)interfaces.get(home);
    if(ejbHome == null) {
      // looks up the interface by its JNDI name
      obj = context.lookup(jndi);
      // casts the returned object into the interface desired
      ejbHome = (EJBHome)PortableRemoteObject.narrow(obj, home);
      // put the newly retreived interface into the collection and
      // list it by its class      never use the interfaces JNDI name
      // because a single EJB object could have multiple JNDI names
      interfaces.put(home, ejbHome);
  catch(ClassCastException e) {
    throw new EJBException(e.toString());
  catch(NamingException e) {
    throw new EJBException(e.toString(true), e);
  return ejbHome;
}