Problem updating itunes to 10.7
Hi im having a problem updating my itunes from 10.6.3.25 to 10.7. Basically if im updating using the the apple software update it finishes downloading and when it gets to verifying the file i get a error message that says ' "ITunes" has an invalid signature. It will not be installed'. Ive also downloaded the file manually from the apple site and when i click on it to install, both normal and run as admin, it doesnt do anything. You see a wee loading bar for literally a second at most and then it disapears. Any help is appreciated thanks.
Windows 7