Hi There,
i have same trouble with this. but i don’t get it to fix. i’m use mojave os.
please help
Try the latest beta please. Go to Glyphs > Preferences > Updates, activate both checkboxes and press the Update button.
I have to update this, but still not fix it
Can you send a screenshot of your export dialog?
What happens in Console.app when you open the dialog?
Can you try in a different user on your Mac? If it works there, you know it has to do with a user setting.
And you have redownloaded and reinstalled the app already, correct?