I've been trying to download patch 319 for a while. What happens when I start it is that it uninstalls civ 4, then if I start it again in reinstalls civ 4, as far as I know it doesn't mess anything up other than remove saves. I have tried it without my anti-virus on running it as administrator. I even have tried getting the patch from multiple sources. I don't know whether or not this has been covered in other posts, but as far as I know it hasn't been recently.
btw I'm using Civilization 4 complete and I have windows 7
btw I'm using Civilization 4 complete and I have windows 7