RGL version, I downgraded to 1.0.7.0 (successfully) my pc is 64 bit. I downloaded this mod from here : https://www.gtagaming.com/real-recoil-f30353.html because I saw it in a video( the youtuber had several mods installed at the same time, most of them requiring 1.0.7.0), and it looked like something that GTA IV very lacked.. I made a scripts folder , put the .dll and .ini in there, launched the game from the playgtaiv.exe, aaaaand it doesn't work( all of the other mods work successful