Am new to the Phantom 4, have had 2 days and have not flown yet.  Wanted to get fully updated and calibrated.  On the DJI Assistant 2, there is a calibration that asks me to point the front of the drone at the computer screen and then the bottom.  Am following along perfectly and it starts the calibration then it says it has failed and gives "401 Camera Parameter B1 Error  135.914" and asks to recalibrate.  Am done multiple times and keep getting this.  Am not sure if this will make the object avoidance not work.  Any suggestions will be greatly appreciated.  Thanks!

Hello joestover, have you tried on other monitors? Is the display scale 100%?

I can't get the calibration to run on my IMAC , I get the following error - any ideas as I have tried all the avaialble resolutions ?

Turn down your screen resolution, its too high and drone cant pick it up... I use 1680 * 1050 and mine works fine, give it a try

Thanks