NSTaggedPointerString countByEnumeratingWithState

I opened up a variable font file I worked with a while ago, did some letters, tried to export and boom; got this error message: Something went wrong while exporting: -[NSTaggedPointerString countByEnumeratingWithState:objects:count:]: unrecognized selector sent to instance 0x220243f720240095 What can I do?

Did you open the .ttf file? You should open the .glyphs file instead.
What version of Glyphs do you have?
Can you send me the .ttx file that I can have a look?

It is a .glyphs file, not .ttf. I was using 2.5.2 (1168), and the problem persists with (1169). Where do I get the .ttx file?

I meant .ttf. But in this case, can you send me the .glyphs file?

Sent in mail

You have an empty “Virtual Master” custom parameter. Either set it correctly or remove it.

OMG! Thanks!