At this time, NI-Device does not support multiprocessor machines. We are working on addressing this issue in future versions, but for 1.5, you must use a single processor machine.
Thanks, Scott B. GPIB Software National Instruments
Then we will have to go back to using NI-Device 1.1 in the meantime. It would be nice to be notified when there is a new version that supports multiprocessor machines.