To add to Brett's reply,
Please also note that if you have Hauptwerk v4 installed and you have upgraded to macOS 10.15+ 'Catalina' (or if you might do so in the future), then it's very important that you uninstall Hauptwerk v4 completely BEFORE you install Hauptwerk v5+, then finally install v5+ using its (10.15-safe) default installation locations (or choose custom installation locations that are not on the Mac's internal drive).
Please see this topic, which covers it in depth: viewtopic.php?f=10&t=17850