In the timetable service departing 04:55 Edge Hill Shed to Edge Hill Yard, you need to couple to a bunch of wagons. However, these wagons are ill placed, the last one is not at the track. As soon as you couple the train will derail. This makes this service unplayable. See the offending wagons in this screenshot. This is before the engine touched the wagons.
Hey Rudolf. If you go into the announcements section and look at the recent patch notes, they changed the physics which made some services unplayable since the freight cars extend beyond the buffers. This is 1 of the services affected so you'll have to wait for a patch