I recently purchased a 64gb class 10 card and it is not working. I can film for 10-20 seconds and then it will stop filming on its own. I tried formatting it from the app and it will say it cant format it. I also tried formatting it from the computer. Here is the link for the card I bought. Hopefully we can get this figured out thanks! NEW 64GB Micro SD Card SDXC Memory Card SD Adapter class 10 FREE TF Reader BLACK