Installed DJI Assistant 2 for mac today.  At the very end of the installation I get an error message that installation can't be completed.  THe app appears to be installed, however, and when I open the app it seems to work fine.-- but when I go to do vision calibration it goes through the tutorial steps, but after tutorial step 4, the "Calibrate Now" button stays grey and the progress wheel keeps spinning.  

I have a Mavic Pro 2 and I'm running Mac OS 10.13.6,  DJI Assistant 2 v2.0.6

There is an Exception version of DJI Assistant-2 for Mavic Pro 2.  I don't know revision number.  You may or may not have version of Assistant-2 you need for Mavic 2 Pro.

DJI's link to Mavic 2 Pro software page

https://www.dji.com/downloads/softwares/assistant-dji-2-for-mavic

Another thought on what could be causing problems.  If your Screen (monitor) is setup with different resolution and DJI Assistant-2 does not recognize resolution, that has been known to cause calibration problems.

Hello and good day Thomas. I am sorry about the trouble caused.  With regards to issue that we are facing today, you may give a try to change the resolution of your screen for your reference you may take a look at this information. It is recommended to use a monitor with a size of 14 inches or more, and a curved screen is not supposed to be used. Set the display resolution to the recommended value (usually 14 inches for 1366*768 or 1440*900; 17 inches for 1366*768 or 1280*720; 19 inches for 1366*768 or 1440*900; 22 inches for 1680) *1050 or 1920*1080; 24 inches for 1920*1080 or 1920*1200). Please give us an update on the said situation for us to help you further. Thank you.