I have Garmin Zumo 660 and am using Garmin Roadtrip on a Mac. I am having trouble uploading routes to the device. Someone sent me a GPX file and I was able to get that onto the device. I tried making some routes on my own but have been unable to get them to appear onto the device.
If anyone is using this gps/computer combo, any advice would be much appreciated. I plan on having a buddy send me another gpx to see if it will load.
BTW I have an 8gb micro sd card in it and tried putting the gpx on the card and into the internal memory. No joy either way.