After installing avast! 2015 Beta 3 and rebooting my laptop (Win 8.1 x64) I got a PAGE_FAULT_IN_NONPAGED_AREA BSOD message referring to (gwdrv.sys) which is a driver of the GlassWire network monitoring tool (https://www.glasswire.com/). Reverting back to avast! 2014 solved this problem. So it looks like there’s an incompatibility between avast! 2015 and GlassWire.
Same Problem here!
I had to revert from version 10.0.2206.692 to 9.0.2021.515 with a system restore point and the windows system recovery. I’m on windows 8.1. The error occured the first time right after iI updated Avast to the new version and the following reboot of windows.
No chance to enter windows while Glasswire is installed an Avast 10 is running.