OK...

Generally, if a computer crashes DURING a data write, things can often go bad, no matter what. Only good backup procedure can get you out of trouble quickly.

But glad to see you using a UPS. I honestly think, with them so affordable, we ALL ought to use them. It won't stop EVERYTHING (as we can see here), but it will surely stop something!

Do you have any more info on WHY the Audya locked up? Had you formatted the stick on a PC, or on the Audya? Did the stick conform to Ketron's specs for them? Had you tested the SMF's previously, to assure that they weren't corrupted or malware?