I've been flying my Disco for some years now.. it's such an amazing thing! I don't think there'll ever be anything like it again. It has a good few quirks though. The flight plan works amazingly well, but you need to bear with it on loading..
Sometimes you just load the plan, and there it with the play button lit green and ready to go.
If not, tap on that triangle button just next to the title of your flight plan to alternate your choice of display. Tap once and your planned route dissappears, leaving just the map. Tap again and your plan reappears.. and your play button will be on green.
If still not, exit the flight plan, wait a couple of seconds, open and load again. Repeat as necessary. It will always work in the end..
