Add missing symbol glyphs

After I added the ‘Add missing symbol glyphs’ Glyphs won’t open my font file anymore. Can anyone help? Please?

I followed this page:
Add missing symbol glyphs

Regards,
René

What version of glyphs do you have?
Can you send us the .glyphs file (support at this domain)?

Georg saved the day (again). Thanks a bunch. :wink:

@towabyusuf
You posted in several threads and non of your posts make any sense. I will delete them until you prove you are not spam.