Are you using the or a "Redux" version of the game?
Installing the NFS Carbon Battle Royale (CBR) mod is a transformative process that turns the base game into a "behemoth" experience with a rearranged story, new cars, and expanded map areas. Because this mod significantly alters the game's core files, a clean installation Need for Speed: Carbon (2006) is mandatory to avoid crashes or unresponsiveness. Prerequisites Clean Game Install: how to install nfs carbon battle royale
You need to know where your game is installed. Are you using the or a "Redux" version of the game