So I was shooting Halloween Party yesterday with external flash and at some point I got 90% white shot with 10% on top of the frame good exposure. It was in the middle of the party and my heart sank at that moment. It was the best party I have ever seen. So I tried the usual tricks like powering down and all that. Nothing would help. Top LCD reads ERR. After fiddling around for a while I clicked the shutter again and again and I heard a click but no picture was taken. And camera started working again like nothing happened.
Wondering if it is an early sign of shutter failure. I will definitely drive to Nikon for a check up.
This is not going to be much help, but I have had essentially the same thing happen although I was never able to see any part of the picture. I take the picture, look at the LCD, it is black. I look at the top LCD, and it say ERR. I switch it off and on and it still says ERR. I push the shutter again and hear a click, no picture is taken but the top LCD returns to normal.
The only thing that I "think" I have observed, is that it has only occured when shooting with a DX lens or once shooting with a Tamron FX lens.
I may be off in left field, but are you using the Auto FP High-Speed Sync (manual page 299)? It's my understanding that in this situation the flash actually fire multiple time to cover the whole scene as the shutter opens and closes. But now that I think about it I believe that if the flash was not firing you would have at least one properly exposed section and the rest would be black, not white... Of course you were shooting fine for a long time prior to the problem. Head scratcher...