"I won't lose my Excel files if the application goes will I? " - right you cannot lose anything in an uninstall that was not put
there by the install. That is assuming the uninstaller works as it should. And in this case no you won't lose anything. I
chose Excel because that one is relatively tame you can take it out put it back in hundreds of times and not be worse for
wear. Yes you will need your install medium to reinstall it.
It will prove whether or not you have a Windows Installer issue. I believe you do not but it would be good to know.
Try some other application something you don't use much or don't care if you can't get it back in at the moment. We
are trying to test the Windows Installer.
Hey you know there is a different way to test the installer. Go into Office in Add\Remove Change | choose to install
addtional components choose one and proceed with the wizard. If that succeeds you have no issue with the Windows
Installer Service.
If the above succeeds and McAffee still fails, Jack Jack Jack it is a problem with McAffee and they really should get it out for you. I suspect you can find this exact issue at their Web site.
http://www.networkassociates.com