you can't import kn5 files into it. The only file type it works for is a specific version of fbx, as stated in the modding pipeline pdf somewhere in the sdk folder. Its not an editor to modify cars with that came with the sim.I don t know why but I can not import any type of files into it. I am sure i am doing something wrong
but I don t know what.I wan t to import kn5 cars to learn things about them and change rims .