GlyphsMini MakeOTF error

I’ve made fonts before with Glyphs Mini (it’s been a few years) but I need to make a font today, got it all ready, and when I exported, I got this error:

I’ve tried several different checking and unchecking of option boxes along with duplicating the file before trying the export again. Any help is appreciated! Thanks!

You don’t happen to run macOS Catalina? Glyphs Mini 1 is not compatible with that version of macOS.

Actually, yep, I’m on Catalina. Thanks for the info! I’m not sure it would’ve registered that I needed to upgrade to get that to work (I hadn’t even realized there was a Glyphs Mini 2 out there now!) Thank you!