The views have changed again. Along with the default 'Library' view introduced in Kontakt 7, we now also have a 'Default' rack view (Hosting the new Tools introduced in Kontakt 8) and a 'Classic' rack view (the original old one).
For those who want to utilise the newly introduced views, open the library manager ==> open the 'options' ==> look for the 'Libraries' tab ==> Checkmark the 'Manage libraries in the NKS browser' checkbox ==> Restart Kontakt if required. (Only do all this AFTER you have added all the libraries you have into the 'Classic' rack view using the normal add library method for Kontakt's portable versions!)
For those who want to utilise the newly introduced views, open the library manager ==> open the 'options' ==> look for the 'Libraries' tab ==> Checkmark the 'Manage libraries in the NKS browser' checkbox ==> Restart Kontakt if required. (Only do all this AFTER you have added all the libraries you have into the 'Classic' rack view using the normal add library method for Kontakt's portable versions!)