Are .nicnt files for Windows only? Can't add to Kontakt

Got a library with a .nicnt file. If I add them in the library tab they don't show up. If I try to add them again, it says "already exists within the Kontakt Libraries tab." I can't see the nicnt file in the files tab either so can't run them at all. Kontakt 5 v5.6.8

 

What library? NICNT files are not used to load a library into Kontakt, they are basically like an authorization file that allows the library to be shown in the libraries tab and allow to be used with the free Kontakt player. To actually load the library, you use .NKI files.

 

If your Kontakt Library has both wallpaper.png and .ninct file, then the Kontakt Library can be uploaded. I realized that after installing certain Kontakt Libraries they're installed but when I load my DAW, I wouldn't see the library. When I would try re-uploading the library, it would say "this kontakt library already exists". I found what worked out to find the libraries was to click the "manage libraries" and you should see your "hidden" libraries. Hope this helps. For example, As you see some of my banks are hidden "808 Battleship, "808 Empire".