Jim Ailor commented,
Found the fix: https://makemusic.zendesk.com/hc/en-us/articles/217663758-Setting-up-Garritan-libraries-with-Finale-and-PrintMusic
Jim Ailor created a post,
Installed Finale 27. Personal Orchestra 5 (PO5) does not show up in ScoreManager. Tried "Reassign Playback Sounds," but still no PO5. In ScoreManager I can select "Edit Player" under "Sound," and c...