I'm new to SkyDemon and there was no indication from where SkyDemon wanted to load its logfiles - I had been sent a log by my instructor.

When clicking on "load from other locations or other file types, there is a hard filter on *.gpx files only. It should at least allow to load *.flightlog as well in my humble opinion. May be something to change?

After copying the files into My Documents\SkyDemon\Logs it worked fine though.