Error: Cannot remove a screen while it is transitioning in or out.
	at feathers.controls.supportClasses::BaseScreenNavigator/removeScreenInternal()
	at feathers.controls::ScreenNavigator/removeScreen()
	at controller.mediator::WindowsMediator/startCloseWindow()
	at controller.mediator::WindowsMediator/onReceivedCloseNotification()
	at Function/http://adobe.com/AS3/2006/builtin::call()
	at org.puremvc.as3.multicore.patterns.mediator::Mediator/handleNotification()
	at Function/http://adobe.com/AS3/2006/builtin::apply()
	at org.puremvc.as3.multicore.patterns.observer::Observer/notifyObserver()
	at org.puremvc.as3.multicore.core::View/notifyObservers()
	at org.puremvc.as3.multicore.patterns.facade::Facade/notifyObservers()
	at org.puremvc.as3.multicore.patterns.facade::FacadeWithJunctions/sendNotification()
	at org.puremvc.as3.multicore.patterns.observer::Notifier/sendNotification()
	at controller.mediator::BaseWindowMediator/closeWindow()
	at controller.mediator::BuyLifeWindowMediator/onBuyBtnClick()
	at org.osflash.signals::Signal/dispatch()
	at view.windows::BuyLifeWindow/onBuyBtnClick()
	at starling.events::EventDispatcher/invokeEvent()
	at starling.events::EventDispatcher/dispatchEvent()
	at starling.display::DisplayObject/dispatchEvent()
	at starling.events::EventDispatcher/dispatchEventWith()
	at feathers.utils.touch::TapToTrigger/target_touchHandler()
	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()


	ypeError: Error #1009: Cannot access a property or method of a null object reference.
	at controller.mediator::PersAnimationsMediator/onAnimationFinished()
	at starling.events::EventDispatcher/invokeEvent()
	at starling.events::EventDispatcher/dispatchEvent()
	at starling.display::DisplayObject/dispatchEvent()
	at PlayerAnimations/onAnimationComplete()
	at starling.events::EventDispatcher/invokeEvent()
	at starling.events::EventDispatcher/dispatchEvent()
	at starling.display::DisplayObject/dispatchEvent()
	at starling.events::EventDispatcher/dispatchEventWith()
	at starling.display::MovieClip/advanceTime()
	at starling.animation::Juggler/advanceTime()
	at starling.core::Starling/advanceTime()
	at starling.core::Starling/nextFrame()
	at starling.core::Starling/onEnterFrame()