UncaughtTypeError: Cannot read property 'is custum' of null

Game Dev Tycoon modding
#1

hello

I have a problem when I start the game it displays UncaughtTypeError: Cannot read property ‘is custum’ of null…I use window 7 and steam
What I can do thanks

#2

I moved 5 posts to an existing topic: Official Mod Code Error Thread - For Mod Users

#3