If you run a service with the BR1442 at the RT route (new timetable), Traction lock will stay active after closing the doors and so on. It can be resolved by applying the handbrake and release it afterwards. Loops like there is set-up issue. I have experienced the issue consistently for all services I tried.
Looks like this just answered the problem I had and posted in the Tech forum. Obviously another low priority for DTG to fix. Going to be a nuisance if this happens at every stop. Might have to refund.