Newbie here, searched the forums but cannot find an answer to this: I uploaded a track as per normal, but when I tried posting the session, the track was not available in my list.

I did check the track in GPSresult, it was fine. The track is over 2 hrs long, if that has any bearing? I left it for an hour, so I can only assume that the system has some problem with it.

Any guidance on this?

Ah, I think I got it - I did a test run yesterday, did not clear it, and carried on sailing today with the unit. I assume it is adding track points to yesterday's track, and hence naming the file as being created yesterday. So one has to clear the tracklog each time after downloading.