I start flash as3 project on Flash CS3, about one year ago. After compile it on CS4, I get this error (on Russian):
TypeError: Error #1009: Не удается вызвать свойство или метод со ссылкой на объект "null".
at fl.controls::TextArea/drawLayout()
at fl.controls::TextArea/draw()
at fl.core::UIComponent/callLaterDispatcher()
But I get this error only in browser (FlashPlayer10), if I run inside Flash CS4 - all works fine.
And I get this error then the MovieClip with TextArea added on stage.