Your SAVE is zero bytes (or 1B at most)???

That's pretty wrong, that's corrupted as hell.
If your save is really 0 bytes then it's already lost. Delete it (so it creates a new, empty, not corrupted save) and start again from the beggining.

PS: Check if it's really 0 bytes in your PC. Maybe the upload failed.
PS2: Also, run chkdsk /f on your card, the filesystem may still be corrupted and your next save will vanish if so. Running chkdsk /f will fix the possible filesystem corruption.

This post has been edited by sarkwalvein, Wed, May 4th, 2011 at 22:45