Hello!
After last update drone and controller I have issue, after importing KML when i try go to edit for flightpath and any changes for example GSD etc. I have communicate "Calculating flight path, please wait" this is never ending story ;) Due to this problem I must draw polygon by finger on the screen. I can't plan mission with KML imported polygon. Before update all was ok with this function...

You likely have nodes ontop of nodes from the export. Look for 0m white distance bubbles or 2 overlapping ones. Double tap on these ones and it should calculate right away as normal. This happens to me a lot.

Mayehem Posted at 6-26 14:33
You likely have nodes ontop of nodes from the export. Look for 0m white distance bubbles or 2 overlapping ones. Double tap on these ones and it should calculate right away as normal. This happens to me a lot.

After deleting doubles in corners I still have the same problem with never ending "calculating flightpath" also when I have easy square 4-point polygon.

Hrmm. Are you using google earth? tried multiple export programs? Are the lines flat?

I use Bentley Microstation to draw area, next I export this to KML file and convert to KML polygon. Maybe You have better workflow?

Connect to the drone, then plan the flight.

Annoying but gets around the issue