This map pack requires WK 5.8.1!ECL maps without grid terrains on ZR maps. See the description of the original map pack here: https://www.voobly.com/gamemods/mod/1010/ECL-MapsYou can download both mods, but select only one them in the mod dropdown in the Voobly lobby.Note:Since some maps such as Kilimanjaro and Serengeti are distributed as ZR maps, they use the terrains that are zipped with the files. There terrains are not overridden by terrain mods. This second mod exists so that players can choose whether to use grids or not to use grids on these terrains.