Title pretty much sums it up:  I click the Expression tool, double-click a measure, chose <measure number>, and nothing happens.

I should note that when I first double-clicked, the "Measure Number" section of the dialog was blank. So, I loaded the Articulations and Text Expressions libraries from the Engraver Font folder, and that got me at least the option of assigning a measure number. But, still no joy.

I keep thinking it's probably a missing library, but I'm not sure how to know (a) which libraries are loaded and (b) which ones I need.

Thoughts?

(Finale 25.1.somethingorother, MacBook Pro, Mac OS)