Logos crashed immediately when I opened the Weights and Measures interactive. There's nothing useful in the log:2781.Logos.log
It looks like a CEF crash rather than a .NET one, but there's no up-to-date CEF log. And there's nothing much in Event Viewer, just this:
Faulting application name: Logos.exe, version: 7.10.0.18, time stamp: 0x59d697ce
Faulting module name: ntdll.dll, version: 10.0.16299.15, time stamp: 0x493793ea
Exception code: 0xc0000005
Fault offset: 0x00000000000a3d72
Faulting process ID: 0x4990
Faulting application start time: 0x01d3457d00cd9db7
Faulting application path: C:\Users\Mark Barnes\AppData\Local\Logos\System\Logos.exe
Faulting module path: C:\WINDOWS\SYSTEM32\ntdll.dll
Report ID: 91ee6e81-230c-40a3-aea0-113b0d968561
Faulting package full name:
Faulting package-relative application ID:
I guess I could attach the WER files if that would be any use.
The crash didn't repeat after a restart.