I had a problem with my Avast antivirus, so I uninstalled it, re-registered and downloaded it again. The problem is, when I run the setup, it just goes through the 0 to 100% thing and stops/nothing else happens. Also, I have not gotten my new registration number email from Avast yet.

Try this:
Use the Avast Uninstall Util to remove Avast, reboot, then try to install.

You don’t need to register again. The first Registration Key will be valid.
Either, you don’t have to download it again unless the file is corrupt.
Do you have any other antivirus installed right now in your system?
Do you use TeaTimer or other application that monitor the startup itens?
Which firewall do you have?

Did you shut down your spam killer?
Anyway, you could use the first Registration key, no problems. :wink: