Well at least I'm not alone in this boat. If it means starting from "clean" figures every time that's a bit of a nuisance but it's something I can try. To date whenever I've loaded a Genesys based figure it's been some customised version. At least I can still do most of my work on a scene in P10 then open it in P11 to tweak the lighting and rendering options, the crashes haven't started happening yet at other times besides when either deleting a character or closing a document.

Tucan-Tiki posted at 8:05AM Fri, 12 March 2021 - #4414773

It's definitely not the runtimes from other versions of poser mines doing the same thing with a new runtime and no early runtimes added installed all content fresh.