It's kind of ironic that Mac is supposed to be "It just works" but there have been so many reports of Arduino issues with El Capitan and Sierra.
Macs only just work when the producer of an external driver strictly obeys the rules of Macs.
It is obvious that this is not the case with this driver (yet) - to install the previous version, which I use with Yosemite, I had to cheat the OS X with some root commands to pretend that it was a signed driver.
So - under normal conditions Macs are really plug and play - not like Windows (plug and pray) 