Hi. Cubase 10 crashes on my system too and does not create crash logs. BEX64 error doesnt appear in my windows logs but ucrtbase.dll does.
Also we get the same exception code : 0xc0000409 (stack buffer overflow) whatever that means.
This is the event log that Windows generates when Cubase closes itself out of the blue :
Faulting application name: Cubase LE AI Elements 10.exe, version: 10.0.15.136, time stamp: 0x5c48ddb8
Faulting module name: ucrtbase.dll, version: 10.0.17763.348, time stamp: 0x26a80883
Exception code: 0xc0000409
Fault offset: 0x000000000006e91e
Faulting process id: 0x23a8
Faulting application start time: 0x01d4ebb9704c826e
Faulting application path: C:\Program Files\Steinberg\Cubase LE AI Elements 10\Cubase LE AI Elements 10.exe
Faulting module path: C:\Windows\System32\ucrtbase.dll
Report Id: 36f95f60-2ee5-4fa8-a7e6-3d8f3066e569
Faulting package full name:
Faulting package-relative application ID:
In my case it seems to be the graphics driver. I contacted Steinberg and they provided me with some possible fixes but none of them solved the problem.
Last possible fix they sent me was from this topic : Cubase 10 Has Stop Working (BEX64 error) on Windows 8 - Cubase - Steinberg Forums
I see a BEX64 error in your Windows log so this may be useful in your case. On my system it doesn´t help.
Cheers !