Honestly not sure what's happened. I've played this custom Scenario a few times, now when I load, it spawns me not in the train but in random places! Different place each time. I'm meant to be starting in Rochester but it spawned me in St Pancras randomly, on foot. What's happening?
This issue happened to Sam on his Scenario Planner streams on Northern Transpennine. It happened because his train was stopping at short platforms along the way. If you were using a double unit try using a single unit. If you were using a long freight or loco-hauled passenger train try using a shorter one.