Upload & Sell: Off
Okay, had this happen a few times.
I'd read a card (doesn't matter which card) and LR would give me a thing saying, such and such photo couldn't be imported.
Remove card, start again, and it imports fine.
Well, this photo imports into LR and shows classic file corruption issues, right? Well, I take the same file from the same card, just manually drag it over, instead of import via LR. I open it in bridge, looks fine. Open it in PS, looks fine.
I'm guessing a possibly bad card reader, because I've had it happen with any number of cards, used or brand new.