Strogino CS Portal

I TRIED ADDING ADDONS AND IT SAYS "Workshop addons are disabled by -noworkshop launch option!" HOW DO I DISABLE THAT OPTION PLEASE HELP ME PLEASEEEEEEEEEEEEEEEE

Workshop didn't work on no-steam game. If you want adding ad-dons do it manually. Like via "Garry's Mod Addon Extractor Tool" and etc...