CORBA.UnknownException class not found error

[Cilla Pestoff]

Hello,

I have a java client calling a PB component on an EAServer.
JDK1.4
JBuilderX
EAServer5.0
PowerBuilder8

I am just using the following simple code:

Properties props = new Properties();
props.put("org.omg.CORBA.ORBClass", "com.sybase.CORBA.ORB");
ORB orb = ORB.init(new String[0], props);
Manager manager = ManagerHelper.narrow(orb.string_to_object("iiop://localhost:9000"));

On this last line I am getting:
java.lang.NoClassDefFoundError: com/sybase/CORBA/UnknownException

Anyone know what this is about? Should I have this class?

Thanks,
Cilla Pestoff