So even if i started a game, install the mod afterwards and then start a new game with the mod it would break most likely and i would have to redownload it? Dang. Ty for your answer. <3That isn't how most mods work. As soon as the mod touches a file/script used in an earlier part of the game it would break. It isn't specifically your save that is broken, so restarting the game won't fix it. You either start a fresh install / no mod or wait for the mod to be updated and continue forward.
/Edit: Thought it would be more like in Bethesda games, where u can add mods and everything works fine, but if u delete one it can break your save.