I am fairly new to modding and I made a mod that basically just changes the stats and perks of the player and all the enemies in the game. It makes the game a lot harder and works like it's supposed to, except one thing.

When I start a new game with my mod the opening scene messes up. The wagons fly through the air and gets stuck. It only does this when my mod is activated. I haven't changed any objects, scripts, quests, etc. that could affect the opening scene.

Does anybody have an idea as to why this happens, or how to fix it? I spent a lot of time on it and this makes it not playable.
Thanks in advance.