Okay, I ended the task for CM and it still threw out this error, but I'll try to reinstall CM again, and see if it fixes that. And for your other information yes, every preset, on every car. I haven't touched anything on Kunos cars besides some visual extension configs, but no data.
Edit: Ohhkayy...reinstalling back to 0.8.1976.36095 doesn't help either..I realized I had a non-test version ticked, I had it off now so I'll try to update to a stable version and see what happens. And still doesn't work too, this is really weird. I might need to try to make my own quick-and-dirty tyre generator preset on some random car so I can make sure the tyre machine itself isn't broken, but I don't know how to make one. If that dosen't work, I might have to find and reinstall the tyre machine plugin.
I'll be honest, I'm throwing in the towel on this one, the plugin reinstall dosen't work, reinstalling CM doesn't work and CM freezes up if I try to make my own tyres. It's probably the tyre machine plugin itself that's screwing up or my Windows 11 is making things go wonky.