macOS Catalina is NOT approved. Do not upgrade yet until Avid has approved it. Marianna ------------------------ Hi, I just updated my Mac to macOS Catalina 10.15.1, and the MC is also to the latest 2019.9.0 But I could not launch MC successfully because of this "reloadinig plugin" issue. It keeps hanging on "Reloading Plugin: QuickTime_OPClient