Missing scenario marker

[ChuckF]

Hi! After installing the Sweet-Sugar scenario for the Big Horn Sub route, and swapping out a lot of stock, I now get a Missing Marker error. When I go to Edit and access the route, the Sheridan Yard Siding 10 marker is in place, and when I checked the player Stop at Destination instructions, this marker is not even used. There is no AI traffic. I've done all the usual maintenance stuff. Any solution to this kind of problem?