TypeError: Error #1009: Il est impossible d'acc裥r �a propri赩 ou �a m賨ode d'une r觩rence d'objet nul.
	at Main()
	at flash.display::MovieClip/gotoAndStop()
	at ispring.presenter.player.slides::SlideMovieClip/gotoAndStop()
	at ispring.presenter.player.slides::PresentationSlideVisualizer/showFrame()
	at ispring.presenter.player.slides::SlidePlaybackController/updateState()
	at ispring.presenter.player.slides::SlidePlaybackController/onClockChanged()
	at flash.events::EventDispatcher/dispatchEventFunction()
	at flash.events::EventDispatcher/dispatchEvent()
	at ispring.presenter.player.clock::PresentationClock/tick()
	at ispring.presenter.player::PresentationPlaybackController/gotoTimestamp()
	at ispring.presenter.player::PresentationPlaybackController/onChangePositionRequest()
	at flash.events::EventDispatcher/dispatchEventFunction()
	at flash.events::EventDispatcher/dispatchEvent()
	at ispring.presenter.player.slides::SlidePlaybackController/setPosition()
	at ispring.presenter.player.slides::SlidePlaybackController/playFromStep()
	at ispring.presenter.player::PresentationPlaybackController/onTransitionEffectFinished()
	at flash.events::EventDispatcher/dispatchEventFunction()
	at flash.events::EventDispatcher/dispatchEvent()
	at ispring.presenter.player.transitions::SlideTransitionController/endTransitionEffectImpl()
	at ispring.presenter.player.transitions::SlideTransitionController/updateEffectProgress()
	at flash.events::EventDispatcher/dispatchEventFunction()
	at flash.events::EventDispatcher/dispatchEvent()
	at ispring.presenter.player.transitions::TransitionClock/set progress()
	at ispring.presenter.player::PresentationPlaybackController/onTimestampChanged()
	at ispring.presenter.player::PresentationPlaybackController/onClockTick()
	at flash.events::EventDispatcher/dispatchEventFunction()
	at flash.events::EventDispatcher/dispatchEvent()
	at ispring.presenter.player.clock::PresentationClock/tick()
	at ispring.presenter.player::PresentationView/onEnterFrame()