I have two Supplemental maps loaded on my zumo660. One is loaded in zumo:\Garmin\gmapsupp.img and the other is loaded on the SDCard:\Garmin\gmapsupp.img.
- zumo:\Garmin\gmapsupp.img is City Nav EUNT v2011.3
- SDCard:\Garmin\gmapsupp.img is an OSM mapset loaded from BaseCamp Windows.
Both work fine on the zumo itself.
I thought BC was suppose to be able to index both of these gmapsupp map sets and display them if selected to do so but the SDCard (OSM) gmapsupp is not being indexed.
Cheers,