null pointer in client observation manager

[Conoly, Brett]

I've been fooling with this for two days and I still can't seem to find
a decent explanation.

I'm trying to set up some simple event listeners within a single class
and I have written an isListening function that uses

 

ObservationManager manager =
session.getWorkspace().getObservationManager();

EventListenerIterator events = manager.getRegisteredEventListeners();

 

For some reason that I don't understand, I'm getting a very random null
pointer within the getRegisteredEventListeners() function and I can't
figure out why.

 

Has anyone seen this problem or possibly have a solution?

Thanks in advance,

Brett