I just got a new Garmin Montana and downloaded ( that's another story, I should have ordered the DVD) City Nav North America 2013. So now the only way I can use CNNA 2013 on my computer and Basecamp , Mac , is to have the Montana connected to the computer. When I zoom in more than .7 mile which I need to do in planing a route I get this The black arrows show roads that are not there just straight line from point to point, The red arrows are the real roads. I do not have any routes or tracks loaded into the Montana . Is there something wrong with CNNA or is it that I don't have something turned on or off ?