I always have to uninstall the old and then install the new update. It does not allow me to install over an existing game.
what about the saves tho
I don't know if they work or not, but you can always copy them out and back once it has been reinstalled. Worst it can do is create errors and you'd have to restart but you can skip any portion of the game anyway so it doesn't really matter.
Yea but its still nice if the old saves can still use on the new version of the game
