Before adding a library, please ensure you have the most recent iteration of Kontakt or Kontakt Player, then make sure it is fully updated. To do this, go to the 'Updates' tab in Native Access. If Kontakt is fully updated, you will not see it in this list.
1) Open Native Access and navigate to the top left of the window and press '+ Add a Serial'.
2) Copy and paste the serial from your purchase e-mail and click +Add Serial.
3) Click the 'Not Installed' tab on the lefthand side and find your library.
4) To the right of the library, there will be an 'Install' button, click this. The library will then download and install.
5) Once the library has downloaded and installed, open Kontakt and load the library from the 'Libraries' tab.