Error #1127: Type application attempted on a non-parameterized type.

It happens during preload whilst initializing the rest of the game, specifically creating the map, heres a stack trace:

TypeError: Error #1127: Type application attempted on a non-parameterized type.
    at lollib.world::MapCells$cinit()
    at global$init()
    at local.world::GameObject()
    at local.world::World()
    at local.world::World$/get singleton()
    at local.data::aLevels()
    at local.data::aLevels$/get singleton()
    at Main/loadData()
    at Main/initialize()
    at flash.display::ShowObjContainer/addChild()
    at flash.display::Stage/addChild()
    at local.net::PreLoader/state_worldload_enter()
    at gblib1.game::State/setState()
    at local.net::PreLoader/state_main_process()
    at gblib1.game::State/process()
    at local.net::PreLoader/onEnterFrame()

And the code around the error:

public class MapCells {

     public static const DIRECTION_PARTNERS:Vector.<Point> = Vector.<Point>([new Point(0, -1), new Point(1, 0), new Point(0, 1), new Point(-1, 0)]);    public static const DIRECTION_DELTAS:Vector.<Point> = Vector.<Point>([new Point(0, -1), new Point(1, 0), new Point(0, 1), new Point(-1, 0)]);

     public var mapIndex:Point;

    public var gameObjects:Vector.<GameObject>;

    public var map:WorldMap;

    public var partners:Vector.<MapCells>;

    public var session:int;

    public var slots:Object;

    private var _levels:Vector.<MapNode>;

     public function MapCells(_arg1:int=0, _arg2:int=0):void{

    this.slots = {};

    super();

    this.mapIndex = new Point(_arg1, _arg2);

    this.slots[0] = World.singleton.gameObjectContainer;

    }