High Speed Highway Checkpoints

On the High Speed Highway scenario checkpoint 2 and after don't activate properly. They appear orange and active, but I drive through and nothing happens. I can drive back and if I go through them again they work and I can go to the next checkpoint, but after that they all seem to have the same problem. Sometimes if I've restarted even the first checkpoint doesn't activate.

I did have a similar problem at one of the other events (can't remember which) but I restarted the game and that worked fine, but not with High Speed Highway. I have deleted BeamNG.drive from Documents and tried again and still the same.

Verify integrity turns up this problem:

userTemp\cefrenderer.log: unknown/deleted