Corrupt Font Files Warning in MyFonts

I’m having issues with updated font files showing as ‘invalid font files’ when uploaded into MyFonts’ Foundry Platform. They’ve said the issue must be on export at my end and I’m not sure what is causing the issue. The only update I made was adding additional interpolations to export, but the error is being reported for every font file. Export seems to runs fine from Glyphs, Fontbakery is reporting no errors, and I can install and use the fonts. Does anyone have any recommendations on how I might be able to narrow down the issue to fix? Using Glyphs 3.3.

Can you ask myFonts for more details?

I’m currently waiting for a response for more information and will update when they get back to me.

Just posting a reply for anyone else that might experience this problem. In this instance it turned out to be a fault on their end, and upon further investigation they found a bug in the validator.

1 Like