Using Litchi for the first time. I created a mission, gave it a name and saved it (all while on location) then attempted to load it to my Phantom to run the mission. Hitting the GO button resulted in a "mission load error". Can someone please explain why the mission didn't get sent to the Phantom? The manual says, "Press the "Play" button located in the left button bar to show the mission preflight report. If the mission is valid, you will be able to tap the Go button in the report window to start the mission." I did that while hovering the P3A, and got the error. What am I missing?