every plane i try to inatall by sklinegtrfreak i keep getting an error message unable to add files help
@trolleyman475 unable to add files means. GTA 5 game is running and being played at the same time. please close gta 5 game. and try again using openiv
https://www.gta5-mods.com/misc/gta-5-gameconfig-300-cars see if this will help!