I just joined a few weeks ago after purchasing a new D850. I have taken almost 1,000 pictures on the new SD Card. SanDisk Extreme Pro 128 GB. Yesterday I took a 24hr trip to Newport RI slept next to the ocean to watch the sunset. I walked around taking pictures of the night life by all the marinas.. I get home today and only 15 of the 90 pictures are missing.. the other 800 from the last few weeks are there. And the first 5 of this trip and the last 10 of the trip are there. Otherwise everything in the middle are missing. I put the SD card directly into the computer and I also used a card reader.. and nothing.. Im running a scan right now after googling. But its not telling me anything. Has this happened to anyone? Ive never had this happen with SanDisk SD cards.. I capture so many cool photos.. The Jamestown bridge, all the lights. Street muscians. The marinas at night. The lighthouse in Point Judith. Im soo upset. Just started out and I drove 4 hours each way just to take photos at one of my favorite places. Help!