Please note that this library requires Kontakt Player 6.1.as stated on the product's page. It will not work in Kontakt 5 or any Kontakt version prior to 6.1.
Please note that Kontakt 6.1 requires Mac OS 10.12 as a minimum :
Also for first time Kontakt 6 users, Kontakt 6 will show as only Kontakt in Native Access :
Mac Mini | 10.13 | KA 6