Dave, I started with an Apple II for business and when the software moved to IBM, I went with it.  I had tried the newer versions of Apple and did not like them.  It wasn't until I got an iPhone and my wife, an educator in a prior life urged me to try again.  I will never go back to a pc.  I wish DJI would port their products to OSX as well.  That was one of the things I liked about the Arduino FC's I could configure them on my Mac.  Yes WinRar is the file that is needed.  You can choose to donate or not.