A live chat with a SanDisk representative yielded nothing except that I need data recovery done. Asking for help fromsome acquantances has led me to go into Device Manager and unnistall the flash drive, then unplug and reboot, but I get the same message about being unrecognized. Someone has suggested deleting the drive and then plugging it in again, but I havn't done that yet (and it sounds like it might not work anyway since the flash drive doesn't work on other computers).
I'm ready to accept defeat and send it off for data recovery but want to see if I can get access to my stuff one more time and save it elsewhere. Are there any programs online to try? Any other methods that might work?