Soooo I'm guessing I have to start over again? My saves get an error message or whatever... and uh I really don't like the idea of having to do everything... all over again.
Soooo I’m guessing I have to start over again?
Game can continue from where you left the previous version. Unless the saves are messed up. Using cheat codes can break the save so it does not work in next version.
You do not say on what platform you play. Wiki has FAQ page and Discord has FAQ channel.
If you can find out what the whatever error message is, you can try showing that.