Can't turn real-time shields on after Avast 7 update

Just downloaded the new Avast 7 as it requested me to. Installed it, rebooted as requested and it appears the Real-Time Shield has been turned off and there’s nothing I can do that allows me to turn it on. I’ve pressed the FIX NOW button, as well as the individual Turn On links. I’ve gone to uninstall it and tried ‘repair’, rebooted etc., but nothing fixes it.

The problem only surfaced when Avast was upgraded to the latest engine today.

did you try a clean install ?

remove with this and reboot http://www.avast.com/uninstall-utility
install again and reboot

did it work ?