RangeError: Error #1125: The index 3 is out of range 3.
	at flashlibs.framework.render.views::Composition2D/removeChildAt()
	at flashlibs.framework.render.views::Composition2D/removeChild()
	at starling.display::DisplayObject/removeFromParent()
	at flashlibs.framework.render.compositions::ChildConfig/dispose()
	at flashlibs.framework.render.views::Composition2D/dispose()
	at flashlibs.framework.extensions.windows::WindowBaseMediator/dispose()
	at views.windows.buyBoosterInGame::BuyBoosterInGameMediator/dispose()
	at org.puremvc.as3.multicore.patterns.mediator::Mediator/pureDispose()
	at org.puremvc.as3.multicore.core::View/removeMediator()
	at org.puremvc.as3.multicore.patterns.facade::Facade/removeMediator()
	at flashlibs.framework.extensions.windows::WindowBaseMediator/internalClose()
	at views.windows.buyBoosterInGame::BuyBoosterInGameMediator/onComplete()
	at starling.events::EventDispatcher/invokeEvent()
	at starling.events::EventDispatcher/dispatchEvent()
	at starling.display::DisplayObject/dispatchEvent()
	at starling.events::EventDispatcher/dispatchEventWith()
	at flashlibs.framework.render.views::Composition2D/advanceTime()
	at starling.animation::Juggler/advanceTime()
	at starling.core::Starling/advanceTime()
	at starling.core::Starling/nextFrame()
	at starling.core::Starling/onEnterFrame()