When getting into my Cruzer Glide 16GB, a windown opened that requested an update. After the upate was complete, the SanDiskSecureAccessV2_win_exe is missing from my drive and I cannot open any files. The USB is still showing there are files on the drive but I just cannot access the vault with my password to open. Is there a way to undo the update without losing the files or is there way to get the files off and onto my laptop? Any help would be much apprecaited.