I received the same message at the end of each reinstall attempt which is "iTunes64setup-exe couldn't be downloaded."
I'd first try downloading an installer from the Apple website using a different web browser:
If you use Firefox instead of IE for the download (or vice versa), do you get a working installer?
Hi there. I used Firefox instead of IE and was finally able to download iTunes. Thank you for the suggestion. I did not like the current version of iTunes though so downloaded iTunes 10.7. When I attempt to open iTunes I receive this message, "The file iTunes Library.itl cannot be read because it was created by a newer version of iTunes." I really would prefer to use iTunes 10.7 versus the current version as I experienced lots of problems w/the current version thus my reason for uninstalling it. Do you know if there is a way that I can convert my iTunes library to the 10.7 version that I just downloaded versus having to update to the newest version of iTunes?
Thanks so much for your help.
Since you've already installed the older software you should simply need to restore the pre-upgrade copy of your library database as per the diagram below, then start iTunes.
If you're tempted to investigate iTunes 11 again see this post for tips on making it feel a bit more familiar.
It is also a good idea to backup the whole library regularly, and especially before an upgrade in case you feel the need to revert to an older version.