Originally Posted by Tina Russell
(The game will crash as the screen displays "Game Saved," but before you actually see the new save file overwrite the old one; and if you start the game up later, you'll see that your old file has not been replaced, and the new file has not been saved anywhere.)
This is weird! Anyway, thanks!
Back up your file to an SD card!!!
I was having this same issue. Something about the save data was making it crash whenever I saved, I guess. I repeated the test a few times, and eventually the whole save file turned up missing. I had to start over.
Also, if you make a backup, you can probably send the developers a copy of the save so they can debug the issue.