Windows Installer error when upgrading to Itunes 8.01

10-11  Source: Network gathering  Views:0 

I receive the following error when trying to install Itunes 8.01 on my Windows XP Service Pack 3 system:
"There is a problem with the Windows Installer Package - A program run as part of the setup did not finish as expected. Contact your support personnel or package vendor"
The upgrade fails and reverts back to the previous version of Itunes.
I tried re-installing windows installer and it is current. All other programs install without issues but Itunes does not install.
I tried the repair option on Itunes - ran it successfully, turned off Norton AV auto protect temporarily then immediately tried running the setup again on Version 8.01 and get the same error.
I have not yet uninstalled version 7 of Itunes on my system followed by running the Windows Installer Cleanup utility to completely remove Itunes from the system.
This issue to date has not been resolved yet but need to try the cleanup option.
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