the frame is black also on the lcd of digital back...
whit my canon never a problem,it's a shame for a product of this price tag designed for professional use
I would be a little slower to blame the camera. It is much more likely a card issue or a card reader issue. I've had an issue from time to time with Canon, Nikon, Hasselblad and once with the Leica S2 ... every time it was the card. A file gets corrupted or something, and then the trouble starts.
BTW, there are a LOT of counterfeit cards floating around out there.
Like others have said, put the card in question aside and deal with it separately. Once you run a good recovery program do not use that card again ... send it to the card manufacturer, they may replace it ... or tell you it is a counterfeit.
Put a different card in the camera, reformat it, and shoot some images, then use a different card reader to download from. I'd bet it will be fine.
-Marc