I tried downloading The Greek Wars mod, but it doesn't open for some reason. Am I doing something wrong when downloading it, or what?

and i think i downloaded the 1.6v patch for Barbarian, does that mean i can't download the 1.5v patch?
cause when I go online, it always says it is not compatible i need 1.5v.

would a 1.5v patch help me load previous games, because my R:TW game doesn't want to load my previous campaigns