I'm trying to calibrate the vision sensors on my P4P+ but can't get past the initial 3rd step. After "Rotate aircraft to aim the box" (Which isn't really clear to me-what is the box?) I get "Rotate aircraft to track the box-incorrect way" and can't proceed to the calibration window. I've repeated the 2nd step over and over, even used an external monitor instead of my laptop screen but still no luck. Has anyone encountered this?