This is just a guess from the newest guy on the forum but here is what I did to get my 2 computer office stable:

Quit Now Up To Date (we don't currently use "Contact") and do a Get Info on the NUTD application and check the "Use Rosetta" box and then relaunch NUTD.

By the way my CPUs are a pair of dual quad core 2.8GHz Mac Pros with 8GB RAM.