Its possible that its just a glitch you are experiencing as a result of
trying upgrade from Windows XP. I would try clean install instead or re-run
setup, I have experience similar issues with setup, after retrying, it
installs (but this is a clean install scenario).
A Warning to potential Upgraders:
A lot of persons are contemplating about upgrading their one and only,
production
install of XP. If you are itching to do that, DON'T! DO NOT upgrade your
existing install of XP if you use it for work or you use it on a daily
basis. Not because Vista is at BETA 2 means its ready for prime time or
production environments, it is for testing and to get feedback on what's
wrong with the product.
I also suspect some persons think Vista has been finalized, no its not, its
still in development. I know Vista looks enticing and all, but it is still
not ready for prime time and the numerous reports of unsuccessful,
problematic clean installs, upgrades are proof of that.
If you want to try upgrade scenarios at least make sure you do it on a spare
installation of XP, you have a back up image of your existing install or
simply do a clean install on a separate drive or logical partition. For
those who have already upgraded their installations of XP and want to return
to XP, your only option is to format that drive and reinstall it. There is
no way to uninstall Vista.
Also, there are no upgrade paths from Windows XP Professional x64 to Vista
x86 or x64. You cannot launch Vista x64 setup in Windows XP x86 or you will
get an "invalid Win32" error. You have to boot off the DVD.
Get Religion: Backup, Backup, Backup!