Cant open .otf file in Glyphs Mini

I get this message when I try to open an .otf to edit it – the font works correctly in Font Explorer in all Adobe apps. The regular weight version opens fine.
Mac OS X Mojave 10.14.6
Any suggestions?
Screenshot 2021-05-25 at 10.46.00

Does it open with Glyphs Mini 2? You can download a trial from the Get Glyphs page.

I’ll give it a go – we have another user/app who may be able to open it – will try that too

Fixed – our other user opened it successfully!

Mods: please close topic