February 15, 2023, 4:34pm
I’m a newbie in Glyphs.
Today I was trying to export my first project (a stencil version of Montserrat Alternates.ttf) and I couldn’t because of this error:
I’ve already checked if there’s something similar on the forum, but all I found is this:
In Glyphs 3, a vendor feature/private feature/four capital letters feature can not reference lookups defined in GPOS features such as ‘kern’ or ‘mark’. The feature code editor shows not error but the export fails with this message:
[Use of undefined lookup name 'mark_some_lookup']
Glyphs 2 has no problem exporting the file.
Test-file (format version 3): Test3.glyphs (6.1 KB, fails in G3)
Test-file (format version 2): Test2.glyphs (6.1 KB, fails in G3, succeeds in G2)
Looking at the generat…
which apparently was a bug of the software that should have been fixed.
Thank you for you help!
That should be fixed in the version that I just uploaded.
February 15, 2023, 4:59pm
I updated it (v. 3.1.2 (3151), right?), but it’s sill giving me the same problem.
Btw, impressed by the speed of the response, thank you!
Georg is referring to the current cutting edge release (beta version) of Glyphs 3.2. You can download it by going to
Glyphs → Preferences… → Updates, and enabling cutting edge versions.
February 15, 2023, 5:29pm
Thank you. Done: now running v.3.2 (3179), but the error still.
February 15, 2023, 6:25pm
Am I understanding correctly that you are working based on a ttf file you imported? That is most definitely not recommendable, especially since Montserrat is open source. Work with the Glyphs files available on the repository:
GitHub - JulietaUla/Montserrat
After installing the new version, you would need to re-import the .otf as the error is with the import and not with the export. But you should use the .glyphs files from the repo as
February 16, 2023, 8:56am
Yes, as the one on Google font was a .ttf. Thank you for the suggestion, I’ll try
February 16, 2023, 1:10pm
Did it again with the .glyphs files and it worked! Thank you all