Track points not showing on Map

I have recently updated my version of Cybertracker (classic) to v3.537. Since then I cannot see the track points on the map, and when I export the map view the track points aren’t included. The sightings information (with lats and longs) is logged fine. It looks like the tracks are being recorded because the number of trackpoints is stated in the dialogue box when I download the data.

I have an old version of Cybertracker (v3.534) on a different computer and that still works fine using the same Samsung Galaxy Active tablet (I can see and export the track points and the sightings).

Any help would be gratefully received.