I'm not sure why this might be happening, I think this is probably one to ask Garmin. There could be a corrupot file in there which is preventing others from loading.
Hi, sorry if this has been answered elsewhere.
Have downloaded tcx files as I want turn by turn, then copied them to the New Files location on my 810. When I unplug it and look in courses there are only 2 out of 6 courses there.
I've manually converted to .fit and the same happens. Ig I use .GPX though all the files go across.
Anyone any idea of the issue? Thanks.