Yep, got the same errors with my worth playing USA patch. At the end of the patch I get this message:
"There was one or more issues discovered while updating Medieval II Total War: Kingdoms.
Status:
Medieval II Total War: Americas: Failed to Update
Medieval II Total War: Britannia: Failed to Update
Medieval II Total War: Crusades: Failed to Update
Medieval II Total War: Teutonic: Failed to Update
Great...