BLUESCREEN ERROR when updating Avast

Updated Avast on a Win7 SP1 64-bit system. When Avast rebooted the system to complete the installation, a blue screen error was issued. That machine had never had a blue screen error before.

Here is the error when upgrading to 11.1.2241 (with definitions 151119-1):

Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.1.7601.2.1.0.768.3

Additional information about the problem:
BCCode: 1000007e
BCP1: FFFFFFFFC0000005
BCP2: FFFFF88001745FA1
BCP3: FFFFF880035E7208
BCP4: FFFFF880035E6A60
OS Version: 6_1_7601
Service Pack: 1_0
Product: 768_1

Avast seems to be working on that machine (the icon appears in the system tray and a Smart Scan completed successfully), but how do I know whether or not something got messed up during the Avast installation which generated the Blue Screen error?

You can send me (kurtin@avast.com) the latest minidump file (\windows\minidump folder), thanks.