Maybe this thread about TXT_KEY-errors contains some helpful information.
If you don't know what this error is, please see this link: http://forums.civfanatics.com/showthread.php?t=328959.
I have found no solution for this. I have uninstalled and reinstalled 4 times. I have deleted every possible reference to game between those installations.
I have heard that it is a glitch with Windows 7 64 bit (which I have), but I have seen no confirmation of that.
Help would greatly appreciated, as it effectively makes Civ 4 unplayable.
Civ2 military advisor: "No complaints, Sir!"
I did see that, yes. Thank you. Unfortunately, it doesn't really have much advice beyond reinstalling, which I did. I ran the reinstalled version both unpateched and patched, and still got this TXT-KEY error.
Any other ideas?
Me too facing the problem, plz help