Error Installing Quicktime

Question

I had quicktime on my computer, then I had to use it one time, so I tried opening it, but nothing happened, as though I didn't click it. So I completely uninstalled it and tried reinstalling iTunes+Quicktime but I get, right at the end of installing Quicktime, QuickTime installation failed: Error Code: -1
And then it promptly closes. I also cannot use my iTunes since I don't have quicktime installed.

Answer 1

hi Elpram!
i don't much like the sound of the "error-less" launch failure that you got with Quicktime initially. what we're going to do is first try to treat the -1. our initial objective is to get itunes and quicktime to the stage (at least) that they fail to launch, but don't give you an error message. once we've got things to that stage, we'll start addressing the error-less launch failures.
the -1 (like the -3) indicates an underlying problem with the QT component of the itunes installer bundle. so first we're going to try a "semi-diagnostic" careful standalone QT install. (even if you get an error message on this install, the additional information will be helpful when it comes to trying to address the underlying problem.)
download and save a copy of the standalone QT 7.0.3 installer to your hard-drive. (we'll run the install from there rather than on line.) switch off any antivirus and antispyware applications prior to the install.
Quicktime 7.0.3 Standalone Installer
if you get an error message during that install, let us know what it says. (include error message numbers if you're getting any.)
if the install goes through, let us know if (at least) you've gotten things to the stage where itunes and quicktime don't give you an error message when you try to launch them.
love, b