Forcefully shutting down your pc while the game is open seems to break all saves, so the game acts if as if you don't have any saves, even though when I dug in the files I still saw my saves there. (Edit: Did some testing more, I started a new game and made a save, then tried to edit the old saves using saveeditonline.com but it says they are in an unsupported format, despite the extentsion being the same as the new one.)