Scrivenings/Outline View Shuts Down Scrivener

Lately, every time I try to look at an outline view of my whole project, it invariably results in my project immediately shutting down.

Does anyone know what is likely to be causing this?

I would add that my project is a hefty one, because my wordcount is touching on 300K, well into trilogy territory. I’d prefer to find a solution, rather than splitting my project up into individual volumes.

I got this,…