I have several important files created a year or so ago (probably in Finale 25). When I open them up now, they will playback all the way to the end, but the measures are not showing. I see boxes - they look like handles for articulations or smart shapes - all over the screen, but no notes.
Curiously, the notes show up in pdfs created from the file, but they still don't show up onscreen in Finale.
Mac OS 10.15.7 (Catalina)