Have been using in my GoPro Hero 3 Black Edition for a few months without issues. Yesterday my GoPro told me that there was an error with the card. The GorPro website says to re-format the card, but its tough to do so when my computer wont recognize the card. After trying the card in a Hero2, Blackberry and my MacBook, its confirmed. My laptop wont recognize it even when connected via the SD adaptor. Im wondering what I could do to fix this issue as the card is expensive!