Yes I originally had the supplied 8GB card in the camera slot which it had said on a couple occasions was worn out. With a 64GB card the the system slot formatted for internal use.SomeoneElse ?
Have you got an sd card in it? If so, what size?
The first guy suggested a only use a 32Gb card even through the manual says 64GB is OK.
Yesterday I replaced both cards with new 32GB extreme cards before making the third call.They made no difference. I also turned thr camera off before using Express. I can't think of anything else I can try so I'm totally in the hands of Garmin.