In this long scenario, after stopping the train at "Sand Patch Summit", the game asks the following: 1- uncouple vehicles and 2- Climb Aboard: Sit in the Engineer's seat of the lead GP38-2. Throughout the entire journey up to that point, I've been able to switch between the external camera and the engineer camera without any issues. When stopping at "Sand Patch Summit" i was using the external camera. When I try to switch to the engineer camera, to go walking on foot to uncouple the vehicles, the game shows a loading screen, and then crashes and closes, not allowing me to complete the scenario. I've tried the scenario several times, and the same thing happens every time. Any help? Thanks.