Originally posted by Gregg Bolinger:
My first guess is the possibility that your testModel object is null. Do you know for a fact that you have instantiated this testModel object before this code is executed?
Ooooh how embarassing... I did instatiate it, but for this particular block it was out of scope. Don't know if I ever would have thought of that, I was so convinced I was doing something wrong specific to DefaultComboBoxModel.
Thanks!
Andrew