Hi, thanks for playing. Yeah it's a big challenge I'm trying to deal with. Whenever possible I'll try to make old save files compatible with the new version, but unfortunately due to the structure of the game (and my knowledge of python) it isn't always possible. Much of the content of the hints screen gets initialised when the game is first starts. I'll do what I can to plan a few versions ahead to allow for compatibility of save files, but can't promise that eventually I'll need to add something that will mess them up. I do appreciate the feedback and glad to hear you're enjoying the game.