Scenario locks up (1920 morningpax)

[moyeraj]

Good Morning,
I am experiencing a weird phenomena. As I move my engine into the classification yard (MCSA 1920) to pickup my passeger cars, the engine stops, and I see I have lost all "keyboard cotrol". My only recourse is to activate the Task Manager and shut down. It is a repeatable event. Only happens when I run this scenario. (1920 mornignpax). Any advice or help is more than welcome.
Thanks