THINK I FOUND THE ANSWER
So, I was having the exact same issue on this thread....
When I went to Control Panel to do my repair.... I notice the update option was actually in the avast UI that came up when I clicked UnInstall/Change Program.
This updated properly and prompted me to reboot my computer. After rebooting I was kinda of skeptical that it had actually updated. Checked the versions though....
Matched... BAM!!! fixed for me
Hope this helps someone
Daedalus44