I think I found the possible problem, in the .zip file, there are the menus and the "art" folder, in that folder is the "ico" folder, and in it there should only be the "Cordoba" folder with the scoreboard images inside.
There is a cordoba directory of more (art/ico/Cordoba/Cordoba), when it should only be art/ico/Cordoba.
They have to cut the subfolder "Cordoba" in the folder "Cordoba" to be overwritten.
Luck.