So I found out that I actually created a backup of the old files with Ragehook before the update went live. Problem is that I fail to install it correctly, as my game still crashes while loading and the patch number in the bottom right corner says 1365(?) instead of 1290. I'm sure I forgot something but I can't figure out what exactly. I know I can play without Scripthook but I don't want to when I got everything I need to be able to play with mods (I hope so).