Some more info:

1. I'm a computer tech by profession.
2. Test mem - OK
3. sfc / scannow - OK
4. uninstalled, reboot and re installed the FireFace drivers.
5. Reset BIAB definition back to default.
6. Windows build: 7601 service Pack 1.
7. AV - Kaspersky (tried to disabled it).

Like I said, now, in Ver 2020 - now problem any more.
I'll wait for a week, just to be sure all is well now, and tried to upgrade again.

Simon, I'm willing to send you the log of "get system info" if it will help.


Goldy