Cubase 9 was downloaded and installed. Should I separately install all additional content from Cubase_9_installer_win/Additional Content folder or is all additional content already installed by default? Thanks.
That stuff in the Additional Content folder is automatically installed. It’s the eLicenser software, Groove Agent SE, Halion Sonic SE etc., the VST Sound files (Cubase’ instrument content) and so on. Makes total sense to install it all, the installer cares for it automatically, so no further user action required.