Here’s something that does not look right, and sure enough is only in the project in question. In the Font Styles list there are three copies of MusGlyphs, and even though I deleted all the items in the project, they cannot be deleted. I know you can’t delete system font styles, but I can delete November 2 if I needed to, which is as add-in just like MusGlyphs.
How can I deal with this? I’d wager this has a lot to do with it.