if you have had trouble installing the latest itunes heres the soloution.
make sure you have internet explorer.
download internet download manager from cnet.
let this app handle downloads for internet explorer.
in internet download manager options set the download speed limit to 100kbs, yes i know it might seem like a slow download speed but this is the only way to download itunes without corrupting it.
the download will take about 10 minutes, but after its downloaded it will install no problem.
i have tested this method on 5 desktops that itunes would not install on and it worked 100%
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