Glyphs 3 crashes whenever an instance is created. This happens both as a completely new instance and Instance from Master.
(If the Glyphs file is completely empty and no glyphs have been created, I can create an instance without Glyphs 3 crashing)
I created a Glyphs 2 file with no instances and it opens fine in Glyphs 3. Once I add instances in Glyphs 2 and try to open it in Glyphs 3, it crashes.
I believe it is also the reason for the crash reported here:
I am using:
OS version: El Capitan 10.11.6
Glyphs Version: 3037
No plug ins are installed