Please reinstall the content using the following files and during the installation be sure to select the option to “Install for All Users”:
If that does not work then I would recommend resetting Cubase’s preferences:
First, please shut down Cubase. Then go to Mac Hard Drive, Users, your user name, Library, Preferences. Trash all of the Cubase or Nuendo folders that you see inside of the Preferences folder. This will trash your custom key commands, preferences, sound card settings, etc. It also should help to clear up the problem you are having. Restart Cubase. You will need to reset your audio outputs (Devices, Device Setup, VST Audio System).