OS is Windows XP, PRO with SP2.
I had problems with 7.5 and the "repair" option would not run (get error "not responding). I tried to uninstall and that would not run either. I finally had to manually delete Roxio, run roxizap and then I was able to reinstall my retail 7.0 version. However, I also have an ESD V7.5 (registered on this site) and when I try to install the 7.5 update (after restarting Windows), I get the following errors.
1. Unable to find a certificate file
2. There was a problem authenticating your version. Please make sure your system is set to the current date (which it is).
I thought the date may have something to do with when the ESD 7.5 was downloaded so I reset Windows XP (Pro) date back to when I downloaded the update but that wasn't the cause.
Edit, correction, this is an "upgrade", not an update. I should have noted that originally.