Hello helpers. I've read relevant posts here on the subject and tried every combo suggested. I've now uninstalled the maps I've downloaded from GPSFile Depot and reinstalled only the FL topo. It installed in Programs 86 on my Windows 7 PC. Mapsource is the latest version and shows only City Navigagtor which I purchased from Garmin. No maps other maps show in View/Map Manager; there is no box with the arrow for selecting other maps on the upper left of MapSource.?? Helllllp!!