I haven't used rfactor1 for years. I do remember though, you have to install it in the documents/mydocuments folder or it wont work. something to do with Windows 10 security.
I installed what came up on screen dude? I have tried a few times now, one version worked, could do stuff, but could not load a track, it would CTD every time. Most versions just dont boot up? This is both Lite and normal