Hey Mziln D'Nau Qu'ellar, thank you for reaching out. Is there any chance you were playing a map with Megacities or a Faction with Chosen Destroyers? These would not allow you to create new cities.
It's unlikely that this is a Windows Compatibility Issue, at least one fixed by Windows 8 as we don't support that platform at all.
It's unlikely that this is a Windows Compatibility Issue, at least one fixed by Windows 8 as we don't support that platform at all.