in away3d broomstick example, loadermd5test, if there are several animated mesh(several class which extends EventDispatcher), it didn’t work, why ? this message appear:

Error: Error #2032: Stream Error. URL: app:/players/pg3/model.png
at away3d.loaders::AssetLoader/onRetrievalFailed()
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at away3d.loaders.misc::SingleFileLoader/handleUrlLoaderError()
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at flash.net::URLLoader/onComplete()

because of the MonsterEvent ? i am using loader instead of assetlibrary for different class which extends EventDispatcher
can anyone help me solve this problem? any differences in coding by using different version of away3d? if yes, how ? now i am embedded all my enemies into the main file separate it with different loader
please demonstrate it