I've got a SanDisk MiniCruzer flash (thumb) drive that I've been using to transfer files from one computer to another. Last nite I had created a new file on the drive, in Excel, and got interrupted while writing to the file. I left the file open on the computer. An hour later I came back to it, the file was still open, so I continued to write to the file. When I tried to save it, it wouldn't let me, and asked if I wanted to format the flash drive. Knowing that would wipe it out, I said no. I tried "removing" the drive the proper way, and restarted the computer. Still couldn't save anything to it and every time I tried it asked if I wanted to reformat the drive, I kept saying no. I tried the drive in my other computer this AM, it opens the drive but all the files are gone! It seems to have started with me leaving the file in the drive open for an extended period. Any ideas on what went wrong, or did I do something wrong, or can I do anything to recover my files? Thanks!