Can't save GlyphsProject

I think this happened to me in the past with older versions. I don’t how I fixed it at the time (maybe it get fixed on certain updates). Any help?

Screenshot 2024-09-25 at 16.49.07

Can you try to save it to a different folder?

I think I found it.

File format Glyphs2 was generating the problem. Is this normal?
I think it should be possible to have .glyphsproject linked to any .glyphs file.

Can you send me those files?