TypeError: Error #1009: Cannot access a property or method of a null object reference.
	at ru.crazybit.socexp.model.proxy::BankProxy/buyOption()[C:\Users\u.barhatov\lostspace\socexp\src\ru\crazybit\socexp\model\proxy\BankProxy.as:112]
	at ru.crazybit.socexp.view.mediators.zoo::ZooCollectionsViewMediator/handler_trim()[C:\Users\u.barhatov\lostspace\socexp\src\ru\crazybit\socexp\view\mediators\zoo\ZooCollectionsViewMediator.as:130]
	at starling.events::EventDispatcher/invokeEvent()[C:\Users\u.barhatov\lostspace\starling\src\starling\events\EventDispatcher.as:141]
	at starling.events::LoggerEventDispatcher/invokeEvent()[C:\Users\u.barhatov\lostspace\starling\src\starling\events\LoggerEventDispatcher.as:69]
	at starling.events::EventDispatcher/bubbleEvent()[C:\Users\u.barhatov\lostspace\starling\src\starling\events\EventDispatcher.as:174]
	at starling.events::LoggerEventDispatcher/bubbleEvent()[C:\Users\u.barhatov\lostspace\starling\src\starling\events\LoggerEventDispatcher.as:64]
	at starling.events::EventDispatcher/dispatchEvent()[C:\Users\u.barhatov\lostspace\starling\src\starling\events\EventDispatcher.as:111]
	at starling.events::LoggerEventDispatcher/dispatchEvent()[C:\Users\u.barhatov\lostspace\starling\src\starling\events\LoggerEventDispatcher.as:59]
	at starling.events::EventDispatcher/dispatchEventWith()[C:\Users\u.barhatov\lostspace\starling\src\starling\events\EventDispatcher.as:190]
	at ru.crazybit.socexp.view.components.zoo::ZooCollectionsInfo/handler_trimTriggered()[C:\Users\u.barhatov\lostspace\socexp\src\ru\crazybit\socexp\view\components\zoo\ZooCollectionsInfo.as:194]
	at starling.events::EventDispatcher/invokeEvent()[C:\Users\u.barhatov\lostspace\starling\src\starling\events\EventDispatcher.as:141]
	at starling.events::LoggerEventDispatcher/invokeEvent()[C:\Users\u.barhatov\lostspace\starling\src\starling\events\LoggerEventDispatcher.as:69]
	at starling.events::EventDispatcher/dispatchEvent()[C:\Users\u.barhatov\lostspace\starling\src\starling\events\EventDispatcher.as:112]
	at starling.events::LoggerEventDispatcher/dispatchEvent()[C:\Users\u.barhatov\lostspace\starling\src\starling\events\LoggerEventDispatcher.as:59]
	at ru.crazybit.socexp.view.components.common.core::SoundButton/dispatchEvent()[C:\Users\u.barhatov\lostspace\socexp\src\ru\crazybit\socexp\view\components\common\core\SoundButton.as:183]
	at starling.events::EventDispatcher/dispatchEventWith()[C:\Users\u.barhatov\lostspace\starling\src\starling\events\EventDispatcher.as:190]
	at feathers.controls::Button/button_touchHandler()[C:\Users\u.barhatov\lostspace\feathers\src\feathers\controls\Button.as:3301]
	at ru.crazybit.socexp.view.components.common.core::SoundButton/button_touchHandler()[C:\Users\u.barhatov\lostspace\socexp\src\ru\crazybit\socexp\view\components\common\core\SoundButton.as:87]
	at starling.events::EventDispatcher/invokeEvent()[C:\Users\u.barhatov\lostspace\starling\src\starling\events\EventDispatcher.as:141]
	at starling.events::LoggerEventDispatcher/invokeEvent()[C:\Users\u.barhatov\lostspace\starling\src\starling\events\LoggerEventDispatcher.as:69]
	at starling.events::TouchEvent/dispatch()[C:\Users\u.barhatov\lostspace\starling\src\starling\events\TouchEvent.as:174]
	at starling.events::Touch/dispatchEvent()[C:\Users\u.barhatov\lostspace\starling\src\starling\events\Touch.as:231]
	at starling.events::TouchProcessor/processTouches()[C:\Users\u.barhatov\lostspace\starling\src\starling\events\TouchProcessor.as:190]
	at starling.events::TouchProcessor/advanceTime()[C:\Users\u.barhatov\lostspace\starling\src\starling\events\TouchProcessor.as:135]
	at starling.core::Starling/advanceTime()[C:\Users\u.barhatov\lostspace\starling\src\starling\core\Starling.as:381]
	at starling.core::Starling/nextFrame()[C:\Users\u.barhatov\lostspace\starling\src\starling\core\Starling.as:371]
	at starling.core::Starling/onEnterFrame()[C:\Users\u.barhatov\lostspace\starling\src\starling\core\Starling.as:570]