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   I downloaded the editors choice CO topo 2011 to my pc. I then open Garmin basecamp and connect to my gpsmap 64s. My device and card appear in the tree to the left but I cannot right click on the device to install the map. When I right click on the card an install window appears with my device populated but everything is greyed out and no map is shown to select. Anyone got any ideas whats wrong? thanks