Posted 22 August 2008 - 02:11 PM
My story is almost equal to yours...i found nothing to like about Vista, so I switched back to Windows XP Media Center edition. And, just like you during the installation, after discs one and two, it asked for the service pack 2 disk, which i obviously didn't have, so I just decided to skip it, and it then finished the installation and everything seems alright, but just like you when I insert the 2005 update disc, the same MCInstaller error comes up.
In addition, my big problem is that I cannot get the computer to recognize my internal wireless PCI card. I even uninstalled and reinstalled the driver for it and it says that it is working properly, only it's NOT! In fact, none of my networking stuff shows up. I go to Network Places and there is nothing, no LAN, no WLAN, no anything.
I know your post was back in January...did you ever find a solution?