@NexusGaming nono, its already fixed m8

@HornedOwl then find the folder that has the folders called Airplanes and Subassemblies (don't go into either folder) and make a folder called Mods there, and put the mods in it

@NexusGaming thats, what i was doing but what worked was simply updating the game

click on the mod and open it with your simpleplanes executable

Dont know. I thought you would have been on mobile with the title. I'm on mobile so sorry I cant help.