Can't install Avast home edition..

[mleopeng]

i get this message :

 ' There was an error while changing product configuration'.

i have vista home(32), 2G, 300G hd

i dont have any old version installed. 

[Lisandro]

Did you try avast before (trial version)?
Did you have any other antivirus in the computer in the past? How did you remove it?

[mleopeng]

yeah..i had mccafee that came with computer. used add/remove to take it out.

i also ccleaner to clean up the registry.

[Lisandro]

This article provides the steps to remove SecurityCenter from your computer.
http://ts.mcafeehelp.com/faq3.asp?docid=71525
Also for direct download: http://download.mcafee.com/products/licensed/cust_support_patches/VSCleanupTool.exe
and http://download.mcafee.com/products/licensed/cust_support_patches/MCPR.exe (2007)

If you need, you can find many free versions of these registry cleaners here:
http://www.snapfiles.com/Freeware/system/fwregtools.html

Sometimes, McAfee won't be completely removed if, before, you do not uninstall Avast, including the use of its "Uninstall Application" if necessary (www.avast.com/eng/faq-install-uninstall-avast.html).

[YoKenny]

If you need, you can find many free versions of these registry cleaners here:
http://www.snapfiles.com/Freeware/system/fwregtools.html

I like and use RegSeeker followed by NTREGOPT and reboot:
http://www.hoverdesk.net/freeware.htm
http://www.larshederer.homepage.t-online.de/erunt

I use the Histories ... Old Start Menu items and Clean StreamMRU/Stream keys and after few days I delete the Backups.