This issue just popped up a couple days ago. Here’s the setup. 
1. Komplete 14 Ultimate installed and all libraries working for over a year. 
2. GarageBand host with Mac OS Ventura 13.7 3. with 64 GB memory. 
3. When starting a project using an updated Kontakt 7 or Komplete Control app  I see “content missing” - up to 6000 missing files. 
I’ve tried online solutions and nothing has worked. Ideas?