Thanks for the pointers.PC Inspector products are evidently 100% Windows platform. No sign of anything from them for Mac OS X.
For Mac OS X, I have found FileSalvage, PhotoRescue and SanDisk's own RescuePro so far. I can't say how effective any of them are yet, although I've heard reasonable things about PhotoRescue and RescuePro so far.
Godfrey
