I got several people reporting back the track doesn't load.
Ended up importing everything again from the original version of which I have no fbx. Since I no longer patch the original kn5 hopefully that will solve it for people who couldn't play. In the process, dropped all geometry which appeared funky such as cars and trees. Dropped ads too as they're surely outdated.
I don't really like the visual result of this version but I hope it's playable.
Will try to make an update soon to address missing stuff the best I can (anyone wanting to pick this up PM me, happy to share work or delegate)