I made a route in Mapsource and transferred it to my 60csx GPS. I have highlighted the route in my GPS and set it to "map". But when I go to my map page, the route flashes for about half a second, then disappears. I had to go back to the Route page, select the route again, hit "map" and then stay on that page and use the toggle to follow the map without going off of it.If I went to any other pages, I would have to do the whole thing over again. Any ideas what I'm doing wrong? I used this same GPS for a 2500 mile trip last year and had no problems. Thanks in advance.