RMI on 1.3 (V4R4)

I've done a lot of RMI work with Java 1.1 on V4R4 and V4R5, but
I have an unusual problem under 1.3 (this is the V4R4 box).  The
RMI server seems OK (it's bristling with debug code), and the
method I am testing returns a Vector.  The client test program
I wrote seems fine right up until the server goes to return the
Vector, then I get

java.rmi.UnmarshalException: error unmarshalling return; nested exception is:
         java.io.EOFException: Expecting code

(on the client side).  I've seen marshalling exceptions when
classes don't match on both sides, but that's not the case here.
Is there something I have to change relating to this?  (I did have
to put some SecurityManager stuff in that I didn't need in 1.1.)

Or maybe I should wait until the PTF is on and test again?

--
____________________________________________________________
Glenn Holmer                          gholmer@weycogroup.com
Programmer/Analyst                       phone: 414.908.1809
Weyco Group, Inc.                          fax: 414.908.1601