I'm a recent user to Skydemon. It has worked perfectly for navigation with my old GPS receiver, an Emtac BTGPS III. No issues at all.

However, I've recently upgraded to a new receiver (here: http://www.gns-gmbh.com/index.php?id=79&L=1). It offers some benefits as it has a faster refresh, support for more constellations than just GPS, and SBAS. And also has a longer battery life.

The new receiver works flawlessly with Memory Map both on my PDA and my laptop, as well as with my Android phone. However, Skydemon will not work with it. When entering Navigation mode, it simply says "Seeking Satellites, 'n' found ('x' out there)". It never gets past that and never gets a fix, even though it often 'finds' as many as 15 or 16 satellites.

Having the same issues with my setup (iPad Mini with GNS2000 Glonass). I've returned it to AFE from which I purchased it for a firmware update. Unfortunately, its not something that can be updated via a PC download, rather, a special firmware updater is required! Hopefully this should fix the issue!