NotePerformer not appearing in Playback Templates

Hi all - I downloaded Dorico 3 today and am having trouble getting NotePerformer to work. It shows up as one of the options in the VST instruments dropdown but doesn’t play. The advice seems to be to select it in Playback templates, but NotePerformer is not listed as one of the options. Any help?
Ed.

Please see this sticky thread.