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TypeError: Error #1009: Cannot access a property or method of a null object reference.
   at misc::Util$/localizeMatrix()[/source/misc/Util.as:210]
   at wck::BodyShape/syncTransform()[/source/wck/BodyShape.as:1302]
   at wck::BodyShape/updateTween()[/source/wck/BodyShape.as:1322]
   at flash.events::EventDispatcher/dispatchEventFunction()
   at flash.events::EventDispatcher/dispatchEvent()
   at Box2DAS.Common::b2EventDispatcher/dispatchEvent()[/source/Box2DAS/Common/b2EventDispatcher.as:27]
   at Box2DAS.Dynamics::b2World/Step()[/source/Box2DAS/Dynamics/b2World.as:158]
   at wck::World/step()[/source/wck/World.as:194]