That's very kind of you. Yes, I did, indeed, take both the NEF and its JPG images from the main PC, copied them to the notebook, and also the opposite, and in both cases, the notebook succeeded with the F&R function while the main PC failed. I will take your advice and compare all preference settings. I should add that these are both set up to play nicely with Nikon's CNX2, and I wonder if there is a setting issue there. Sadly, I need to shift away from CNX2, and am strongly leaning toward Capture 1 Pro 9, but that is another story....
Cheers
Gary