Im assuming you have several mods active and they're conflicting. The mods on this game are incredibly basic in terms of working together. Pretty much if 2 of them try and edit the same thing, unless 1 intentionally accounts for the others it won't work. Because this is such a large mod that's probably your problem. I would recommend removing all your mods, then loading this mod FIRST. From there check if its working properly. If it is, then its a conflict with your other mods. Keep adding them on until you find which one is breaking your game. Then either don't use it or see if you can find a compatible version
Hint: There's nothing in this mod that will break your game when its by itself and applied to the base game (not yet compatible with bugfixes).