If you save the iTunes setup program to your drive and then try to install by
opening that file, you will sometimes get the message "not a valid Win32
application". Instead of saving the download, select "run" and the program
should install normally. If it still won't install, see below.

I had the same problem with iTunes/QuickTime and Roxio/Sonic. Before Vista
will let you update/install a newer version of a program, all remnants of the
program must be completely removed from your system. Since the Vista
uninstall feature sometimes does a poor job at this, these remnants often
have to be removed manually. The following tutorial shows how to do this:

http://www.vistax64.com/tutorials/87...ram-vista.html


"Andrew McLaren" wrote:

> "CSM" <csm55@hotmail.com> wrote ...
> > Anyone know why the newest version of iTunes with Quicktime fails to
> > install the QT component giving an error
> > message? QT stops stops install and iTunes will not install w/o it!
>
> And what was the error message?? Knowing the error usually helps solve the
> problem! :-)
>
> Anyway it sounds like you are running into quite a common problem with
> iTunes and QuickTime. It is discussed in this article on Apple's website:
>
> http://docs.info.apple.com/article.html?artnum=304405
>
>
> The article mentions Windows XP but the same info applies to Vista; note,
> you must be running as administrator (right-click the command prompt icon in
> the Start menu, select "Run as Administrator" to get an Administrative
> command prompt).
>
> If this isn't the error you're describing, reply back here with more
> details.
>
> Hope it helps,
> Andrew
>
>