Re: Worldwide routable Garmin maps: URL REMOVED

I didn't respond earlier because, uh, I don't have a clue.. So three guesses:
A) Zoomlevel and/or detail setting. Zoom out or zoom towards a spot that should be on the map (perhaps the GPS location is still somewhere where you havent downloaded a mapdata for) and set details to normal.
B) transparency in combination with map layer number. Try to disable every map on the gps and then enable OSM.
C) Conflicting map id's. Remove every map from the GPS and upload only OSM (do this only if you have the other maps available (backup) on the pc!)