Download and unzip the NBPL folder: https://drive.google.com/file/d/1s3jqJYjf2nT-bkaZLuI_1jpEWXsOutej/view?usp=drive_link
Place it in: Macintosh HD > Users > Shared
Please download and unzip the installed_products-json file from here: https://drive.google.com/file/d/1SQVknyv8JuDYel8YBhRfTMaFadqIrkhk/view?usp=drive_link
Place the unzipped json file in the following folder:Macintosh HD > Users > Shared > Native Instruments > installed_products
Restart your computer and open Native Access.
It took me hours to figure this out, but it seems that for MacOS, all "previews" folders within the library folder should be renamed to ".previews". Too bad this post doesn't include this information.
There might be a misunderstanding here. The NPBL, or Preview Library mentioned in this post is a library that needs to be installed separately and contains preview samples of some older libraries. More recent libraries do not need this library because the previews are found in the library folder, which I guess you are refering to.
Not sure what happened on your system but in the case of all the newer libraries, the preview samples are found here and are contained in a folder that is already named .previews and no further action is required for the previews to work in Komplete Kontrol or Kontakt.
The issue is with the app used to extract ZIP files on macOS. The built-in ZIP extraction tool handles files with the ".filename" extension (hidden files on macOS) correctly. However, other apps (such as The Unarchiver, which I'm using) rename them and remove the "." prefix during extraction.
This is great, @Jeremy_NI! Many thanks!
I have all my content on an external SSD, so I just edited the .json file with the pathname for the files on the SSD and it works just fine.