Hey Dan,
Well I am by no means an expert in reading crash logs, and this may just be a shot in the dark, but I figured I'd see if I could help out another guy from here in the "state of a thousand taxes" (MA.). smile

I did notice that the first entry in thread #3 which crashed had to do with "com.apple.NSXPCConnection.m-user.com.apple.bird".
IIRC this "com.apple.bird" process has to do with iCloud syncing.
Maybe you could try to completely log out of iCloud and try saving the file again ?

Like I said, it's a longshot, but that is the extent of my crashlog reading experience. blush

Hopefully this helps, if not then maybe the PG folks will chime in.
They seem to be good at making sense of these logs.

- Jay

MacPro 5,1/12 core@3.46GHz -- OS X 10.14.6 -- ATI 7970 -- 32 Gig RAM -- Crucial 500GB OS SSD -- Samsung EVO 1TB Audio/Sample SSD -- BIAB 2023 -- Logic Pro X -- Cubase Elements 11 -- Too many plugins