ypeError: Error #1009: Cannot access a property or method of a null object reference.
	at views.windows.quests::QuestsWindowMediator/onLevelDefinitionReady()
	at flashlibs.utils::Dispatcher/dispatch()
	at flashlibs.framework.common.handlers::Progress/finishProcess()
	at dataBase.controller.levelsDefinitions::RequestLevelDefinitionCommand/execute()
	at org.puremvc.as3.multicore.core::Controller/executeCommand()
	at org.puremvc.as3.multicore.core::Controller/executeCommands()
	at org.puremvc.as3.multicore.patterns.observer::Observer/notifyObserver()
	at org.puremvc.as3.multicore.core::View/notifyObserver()
	at org.puremvc.as3.multicore.core::View/notifyObservers()
	at org.puremvc.as3.multicore.patterns.facade::Facade/sendNotification()
	at views.windows.quests::QuestsWindowMediator/checkLevelForHelp()
	at views.windows.quests::QuestsWindowMediator/onPressHelp()
	at flashlibs.utils.components::ButtonComponent/dispatchDownListeners()
	at flashlibs.utils.components::ButtonComponent/listeningTouches()
	at starling.events::EventDispatcher/invokeEvent()
	at starling.events::TouchEvent/dispatch()
	at starling.events::Touch/dispatchEvent()
	at starling.events::TouchProcessor/processTouches()
	at starling.events::TouchProcessor/advanceTime()
	at starling.core::Starling/advanceTime()
	at starling.core::Starling/nextFrame()
	at starling.core::Starling/onEnterFrame()