I have a Samsung D807. I purchased a 2gig PNY microSD disk. I was uploading mp3's (the correct 192kbs) through PC studio today with no problems when all of a sudden it stopped about half-way through. "Failed to send the file(folder)." Now I can't send anything else, not any other file type. I can play what I've already got on there, but I can't add anything else. I can also delete stuff from the card, but I can't add anything on after deleting stuff. What gives?