In the clinchfield scenario “The Setup”, there is a game breaking bug. After moving the first two sets of coal wagons to their respective locations, you are then told to couple to the third set of coal wagons. I couple up to them, but as soon as I do that, my throttle bar becomes red and I get a warning. I look in the cab and I see a “pcs open” warning light. I tried pressing everything in the cab to see if I could fix it but I had no luck. You are unable to move the train at this point.
I found a video online and I now see how to solve the issue. But I think it’s dumb that they don’t tell you in the tutorial how to resolve the issue.