After a full day shooting, I went to download my XQD card to my computer and it said that the file system was not recognized and that I needed to re-format the card. Stuck the card back into the camera to see if it worked there and camera said that I needed to format the card before use. Ouch, probably 700-800 images were on that card. Anybody have any ideas what I can do? I haven't reformated the card at this point.