TypeError: Error #1009: Cannot access a property or method of a null object reference.
	at org.plamee.models.VO::LevelVO/get chapter_id()[/Users/doroninilya/m3flash/m3client/src/org/plamee/models/VO/LevelVO.as:28]
	at org.plamee.managers::DialogsManager/send()[/Users/doroninilya/m3flash/m3client/src/org/plamee/managers/DialogsManager.as:41]
	at org.plamee.level.view::LevelMediator/handleStartLevel()[/Users/doroninilya/m3flash/m3client/src/org/plamee/level/view/LevelMediator.as:206]
	at org.plamee.level.view::LevelMediator/handleNotification()[/Users/doroninilya/m3flash/m3client/src/org/plamee/level/view/LevelMediator.as:114]
	at Function/http://adobe.com/AS3/2006/builtin::apply()
	at org.puremvc.as3.patterns.observer::Observer/notifyObserver()[C:\Documents and Settings\Owner\My Documents\workspaces\PureMVC\PureMVC_AS3\src\org\puremvc\as3\patterns\observer\Observer.as:100]
	at org.puremvc.as3.core::View/notifyObservers()[C:\Documents and Settings\Owner\My Documents\workspaces\PureMVC\PureMVC_AS3\src\org\puremvc\as3\core\View.as:113]
	at org.puremvc.as3.patterns.facade::Facade/notifyObservers()[C:\Documents and Settings\Owner\My Documents\workspaces\PureMVC\PureMVC_AS3\src\org\puremvc\as3\patterns\facade\Facade.as:404]
	at org.puremvc.as3.patterns.facade::Facade/sendNotification()[C:\Documents and Settings\Owner\My Documents\workspaces\PureMVC\PureMVC_AS3\src\org\puremvc\as3\patterns\facade\Facade.as:387]
	at org.puremvc.as3.patterns.observer::Notifier/sendNotification()[C:\Documents and Settings\Owner\My Documents\workspaces\PureMVC\PureMVC_AS3\src\org\puremvc\as3\patterns\observer\Notifier.as:49]
	at org.plamee.views.popups::PopUpLevelStartMediator/handleNotification()[/Users/doroninilya/m3flash/m3client/src/org/plamee/views/popups/PopUpLevelStartMediator.as:59]
	at Function/http://adobe.com/AS3/2006/builtin::apply()
	at org.puremvc.as3.patterns.observer::Observer/notifyObserver()[C:\Documents and Settings\Owner\My Documents\workspaces\PureMVC\PureMVC_AS3\src\org\puremvc\as3\patterns\observer\Observer.as:100]
	at org.puremvc.as3.core::View/notifyObservers()[C:\Documents and Settings\Owner\My Documents\workspaces\PureMVC\PureMVC_AS3\src\org\puremvc\as3\core\View.as:113]
	at org.puremvc.as3.patterns.facade::Facade/notifyObservers()[C:\Documents and Settings\Owner\My Documents\workspaces\PureMVC\PureMVC_AS3\src\org\puremvc\as3\patterns\facade\Facade.as:404]
	at org.puremvc.as3.patterns.facade::Facade/sendNotification()[C:\Documents and Settings\Owner\My Documents\workspaces\PureMVC\PureMVC_AS3\src\org\puremvc\as3\patterns\facade\Facade.as:387]
	at org.puremvc.as3.patterns.observer::Notifier/sendNotification()[C:\Documents and Settings\Owner\My Documents\workspaces\PureMVC\PureMVC_AS3\src\org\puremvc\as3\patterns\observer\Notifier.as:49]
	at org.plamee.controllers::StartLevelCommand/onLoaded()[/Users/doroninilya/m3flash/m3client/src/org/plamee/controllers/StartLevelCommand.as:38]
	at org.plamee.loader::PackageLoader/inComplited()[/Users/doroninilya/m3flash/m3client/src/org/plamee/loader/PackageLoader.as:57]
	at org.plamee.loader::AssetLoader/dispatchContent()[/Users/doroninilya/m3flash/m3client/src/org/plamee/loader/AssetLoader.as:126]
	at org.plamee.managers::AssetsManager/update()[/Users/doroninilya/m3flash/m3client/src/org/plamee/managers/AssetsManager.as:27]
	at flash.events::EventDispatcher/dispatchEventFunction()
	at flash.events::EventDispatcher/dispatchEvent()
	at flash.utils::Timer/tick()