Błąd Error #1009: Cannot access a property or method of a null object reference. Flex

Witam Wszystkich

Przy uruchomieniu programu występuje mi błąd:

TypeError: Error #1009: Cannot access a property or method of a null object reference.
at MojProjekt/init()[C:\Documents and Settings\MrBeckham666\Adobe Flash Builder 4.6\Zyciorys\src\MojProjekt.mxml:29]
at MojProjekt/___MojProjekt_WindowedApplication1_initialize()[C:\Documents and Settings\MrBeckham666\Adobe Flash Builder 4.6\Zyciorys\src\MojProjekt.mxml:5]
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at mx.core::UIComponent/dispatchEvent()[E:\dev\4.y\frameworks\projects\framework\src\mx\core\UIComponent.as:13152]
at mx.core::UIComponent/set processedDescriptors()[E:\dev\4.y\frameworks\projects\framework\src\mx\core\UIComponent.as:1871]
at mx.core::UIComponent/initializationComplete()[E:\dev\4.y\frameworks\projects\framework\src\mx\core\UIComponent.as:7670]
at mx.core::UIComponent/initialize()[E:\dev\4.y\frameworks\projects\framework\src\mx\core\UIComponent.as:7649]
at spark.components::Application/initialize()[E:\dev\4.y\frameworks\projects\spark\src\spark\components\Application.as:1355]
at spark.components::WindowedApplication/initialize()[E:\dev\4.y\frameworks\projects\airspark\src\spark\components\WindowedApplication.as:1834]
at MojProjekt/initialize()
at mx.managers.systemClasses::ChildManager/childAdded()[E:\dev\4.y\frameworks\projects\framework\src\mx\managers\systemClasses\ChildManager.as:189]
at mx.managers.systemClasses::ChildManager/initializeTopLevelWindow()[E:\dev\4.y\frameworks\projects\framework\src\mx\managers\systemClasses\ChildManager.as:359]
at mx.managers::SystemManager/initializeTopLevelWindow()[E:\dev\4.y\frameworks\projects\framework\src\mx\managers\SystemManager.as:3057]
at mx.managers::SystemManager/http://www.adobe.com/2006/flex/mx/internal::kickOff()[E:\dev\4.y\frameworks\projects\framework\src\mx\managers\SystemManager.as:2843]
at mx.managers::SystemManager/http://www.adobe.com/2006/flex/mx/internal::preloader_completeHandler()[E:\dev\4.y\frameworks\projects\framework\src\mx\managers\SystemManager.as:2723]
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at mx.preloaders::Preloader/timerHandler()[E:\dev\4.y\frameworks\projects\framework\src\mx\preloaders\Preloader.as:542]
at flash.utils::Timer/_timerDispatch()
at flash.utils::Timer/tick()

Po naciśnięciu Kontynuuj program funkcjonuje poprawnie. Czy pomoglibyście mi wskazać ten błąd. Kod programu w załączniku.