[Papervision3D] ColorMaterial fails the interactivity test

[-a-]

When you assign an eventListener to a primitive that uses the 
ColorMaterial texture, it throws up the following errors. This occurs in 
spite of the materials interactive property set to true

a

TypeError: Error #1009: Cannot access a property or method of a null 
object reference.
    at 
org.papervision3d.utils::InteractiveSceneManager/handleMouseOut()[D:\data\ASlibraries\3\pv3d\branches\Phunky\trunk\src\org\papervision3d\utils\InteractiveSceneManager.as:232]
    at 
org.papervision3d.utils::InteractiveSceneManager/manageOverOut()[D:\data\ASlibraries\3\pv3d\branches\Phunky\trunk\src\org\papervision3d\utils\InteractiveSceneManager.as:160]
    at 
org.papervision3d.utils::InteractiveSceneManager/handleRenderDone()[D:\data\ASlibraries\3\pv3d\branches\Phunky\trunk\src\org\papervision3d\utils\InteractiveSceneManager.as:146]
    at flash.events::EventDispatcher/dispatchEventFunction()
    at flash.events::EventDispatcher/dispatchEvent()
    at 
org.papervision3d.core.render::BasicRenderEngine/render()[D:\data\ASlibraries\3\pv3d\branches\Phunky\trunk\src\org\papervision3d\core\render\BasicRenderEngine.as:80]
    at 
org.papervision3d.core.render::InteractiveRendererEngine/render()[D:\data\ASlibraries\3\pv3d\branches\Phunky\trunk\src\org\papervision3d\core\render\InteractiveRendererEngine.as:36]
    at 
org.papervision3d.scenes::Scene3D/renderObjects()[D:\data\ASlibraries\3\pv3d\branches\Phunky\trunk\src\org\papervision3d\scenes\Scene3D.as:112]
    at 
org.papervision3d.core.proto::SceneObject3D/renderCamera()[D:\data\ASlibraries\3\pv3d\branches\Phunky\trunk\src\org\papervision3d\core\proto\SceneObject3D.as:264]
    at 
MP3RadioNavPlane/onEnterFrame()[D:\data\NetProjects\MP3_radio\src\MP3RadioNavPlane.mxml:163]