Okie, so I have vanilla Civ 4 on my Vista Home Premium system, and I bought BTS from GameStop and got their download version. I downloaded their installed (1.32 GB) and ran it. The Install program starts up. It asks for a language and then gives me the first screen of the installer. I hit Next, and the window goes away. Process dies. No error message or dialog box. I've sent an email into GameStop tech support, but no response. Here is what I have done: Run As Administrator (right-click) Changed compatibility mode to Win XP Done both of the above at the same time Disabled UAC (already had it disabled) Re-enabled UAC (just in case it mattered) Enabled the real Admin account and tried the above from there Started Vista up in Selective Mode with nothing on but Windows Installer Uninstalled and reinstalled the original Civ 4 No Dice. Happens on multiple systems, Vista and XP. So there is something weird about this package, I think. Any suggestions before I start asking for refunds?