I've been searching for 2 hours and have found nothing on this problem.
I downloaded BitDefender.
I uninstalled Norton using the uninstall tool for it. Deleted all the files that it missed using CC and Regcleaner.
Clicked the exe file to run BitDefender setup. A window opened and said "downloading bdav.msi"
Then it told me there was some kind of problem and I needed to run the online scan and try running it again. Which I did. Over 2 hours of scanning.... then I tried again. Now it just hangs there downloading bdav.msi.
This is not a good start for a new antivirus and I'm sitting without any at all now since I removed Norton.
Help!