Windows installer will not install ITunes 7 or Quick Time

Question

I previously ran iTunes 4 with an earlier model iPod. Recently upgraded to iPod for video which was not recognized by iTunes 4. Attempted to download updated iTunes software and continue to be unsuccessful. Here's what happens:
I am able to download both iTunes 7 and QuickTime to my hard drive, but when invoke the respecive .exe files I get the same error message which reads, "This installation package could not be opened. Verify that the package exists and that you can access it, or contact the application vendor to verify that this is a valid Windows Installer package."

Answer 1

I have never heard of the respecive.exe file in regards to itunes or ipod. Are you sure you followed the troubleshooting steps word for word? I've had some people read the follow, "Empty your temp folder contents" to mean delete the temp folder. You have to be careful to follow them closely. I still sometimes have to reread some steps only to find out I didn't read it correctly the first time.
With that said, how do you know its a windows installer problem? If you were installing itunes & QT using their standalone installers there won't be a file called respecive.exe for either. You should be launching itunessetup.exe to install itunes (which can possibly contain QT). I forget what the standalone QT installer is called but I know it isn't respecive.exe.
Here are the steps I suggest to people who have trouble installing itunes. Please read them over first and ask a question if something isn't clear.
1. Uninstall itunes and ipod software
2. Reboot your PC
3. Re-download the itunes installer and QT and save this installer to your desktop
4. Go to C:\WINDOWS\Downloaded Installations. You should see folders like {06EB3288-C5F4-4C73-8EEE-AC798668FF66}
5. Look in each of these folders for itunes.msi and delete the folder. Be careful to only delete the folders containing itunes,msi
6. Clean out your temp folders, Delete as much as you can in these folders except for the folders Cookies, History, Temporary Internet Files.
a. C:\windows\temp (if one exists)
b. C:\Documents and Settings\{username}\Local Settings\Temp
Sometimes installers will pick up old files or won’t delete their temporary files.
7. Go to http://www.download.com/3000-2094-881470.html and download the regcleaner. Unpack it and run it. This is a nice utility that will delete broken registry entries and create a file with them. This way if it deletes anything needed you can add it back. Note I never had to do this with using it for many years. Also it doesn't list XP but you'll be fine. I run XP on both.
8. Reboot your PC.
9. Now try to go and install everything again. I'd do QT first then follow with itunes. Remember to disable virus/firewall/privacy/web accelerators before launching the install.