Error in Vista when uploading drivers to Broker

I've tried to upload a Dell and an HP driver to the Broker in our test
environment in order to test printing in Vista. We're NW6.5 SP7 and the
error I get everytime is "Exception saving resource print drivers
configuration. NDPS Library Error Category 1060004h. Other error:
FFFFFC2Eh". This only happens with Vista drivers, I was successfully able
to upload an XP driver just fine. Has anybody encourntered this and have
ideas about how to fix it?