I have the same problem as racerss, IS_ISI has no attribute SP0, tried to reinstall many times in many ways, i know its been like 2 years since update but is it just broken now or something?
Been Messing about in Lfs for a few weeks now, I have a HTC vive and recently got a Logitech G29 wheel With shifter and had been looking for a great running simulator, i had no idea how great a game this would be, so i bought an s2 licence a few days ago and have been hooked ever since. Most Immersive thing i have ever done in VR and its great that i can play along with everyone rocking pc's/laptops. I feel like this is the Car/sim equivalent of Arma the way online feels.
Anyway just wanted to say hello! I know the game is old in the realms of things but i see a community still stands and i think its great that this game has stood the test of time so well!