I only have the latest version. I played this game for one hour then leaves. Next day, I opened the game then BOOM. My whole 1hr play through was gone.
Where is your game folder located? As I said, I recommend you put it in Documents.
Check if the folder \www\save has any files in it.
Also, please double-check that you are not accidentally running the game.exe file from inside the .zip file and instead are running it from the game folder you extracted.