Basecamp (4.8.11) crashes (disappears from screen, needs reload) when creating route from a track on iMac

I am using some navigation software to create a .gpx file from the planned track. I import it into Basecamp OK. The list shows all the way points and a set of tracks. The track list contains a full track and also the segments of the full track broken down into 500 nodes per segment. If I try to create a route from the complete track, Basecamp crashes. I've been able to create routes from all the segments OK, apart from the second segment. I've had a look at that segment and to my human eye, there are no obvious differences between that segment and any others. I've attached the full .gpx which contains the full track and the individual segments in case you are able to help me work out what is going wrong, many thanks, Mark.

yorkshire_road_trip_2021 (1).gpx.zip

  • For some reason Basecamp occasionally takes offence at a particular waypoint. I have had the same problem when adding a waypoint to a route. If I move the waypoint slightly it then usually accepts it without crashing. When working with tracks you might have a huge job trying to find out which point is causing the crash.