When simulating my Timetable: TS2: Trigger door lock state 0 for service 2C51(2) This continuously repeats itself and the service never completes its instruction. Any ideas would be appreciated!
I've had this a lot with the DB BR 642 and a few times with Doppelstock trains. It's a bug somewhere in the core. Try using a different stopping position, explicitly set the door side in the instruction, try a different platform (if possible) or let the service do some coupling before the load/unload instruction (if possible). It's a nasty bug, but on the positive side: once you get it to work, it will probably not appear again unless you modify anything of the service or the formation (including just repositioning the nodes in editor).
It also depends on the route too, I had many issues with this on RSN and in the end I just had to make AI not open doors at some stations/platforms.