My Avast scans are clean too.

And no, disabling the Behavior Shield doesn’t stop the computer from locking up on reboot after install. I’ve even tried custom install for 6.0.1 and just not installed the behavior shield, but to no success. It still locks the computer during reboot, when it reaches the desktop screen (even though the 6.0.1 scan shows the computer is clean).

I have to safe boot and uninstall to prevent the desktop from freezing, and reinstall 5.0.594 (and set to not update program), and it allows me to reboot without issue or incident.