Crashes on load up

[Beam01111]

hey there, have just installed civ4 and each time i start it, it goes to the loading screen and then just ends with error message


AppName: civilization4.exe AppVer: 0.21.0.167 ModName: ~df394b.tmp
ModVer: 0.0.0.0 Offset: 00084c9c



i have looked for a solution but cant find one any help would be greatly appreciated.