Re: iTunes 10.0.1.22 installation requires Windows Installer package
If there is any problem with the Apple Software Update that you are using then it may cause such problems. To solve this you should try to launch your Apple Software Update. To do this you have to go to Start > All Programs > Apple Software Update. Just select that and see whether it is launching properly or not? If it is not able to launch and you are getting any error message then you have to download the Apple Software Update from internet and install that to your system.
In The Absence Of Light