And btw, I barely had any crashes before that. It was almost perfect.
EDIT: May I also add that I reinstalled SI again because I thought I hadn't installed it. Reason being, the main quest never started for me for SI, so I quickly panicked and thought maybe I didn't install SI after all. Of course, I found out that it was already installed after I had reinstalled SI... I just ended up forcing the main quest through the console command.
Anyways, does this mean that I now have SI installed after all the patches, like the official SI patch? Could that be the reason? Do I have to reinstall the patches too?