Da du Lakeside benutzt musst du Lakeside einfügen...
private _altisArray = ["Land_i_Shop_01_V1_F","Land_i_Shop_01_V2_F","Land_i_Shop_01_V3_F","Land_i_Shop_02_V1_F","Land_i_Shop_02_V2_F","Land_i_Shop_02_V3_F"];
private _tanoaArray = ["Land_House_Small_01_F"];
private _lakesideArray = ["HAUSKLASSE_VOM_SPWANHOUSE"];
private _spawnBuildings = [[["Altis", _altisArray], ["Tanoa", _tanoaArray],["Lakeside", _lakesideArray]]] call TON_fnc_terrainSort;