There's a problem with authorizations ONLY when using N4 3rd party official libs with other instances of any other Nebula programs.
Here is a quote of a thread in old Cakewalk forum, October 24, 18:
2019 and I confirm this. So annoying and sad. Recently I lost all my mix recall due to this problem. Im and old Nebula and Acqua user and never a problem on Sonar.
Rencently bought "Brighton", a 3rd party official Lib for N4, and it became a nightmare. Test on Reaper and no problem on same system (Win7 64bit)