VideoError: 1008: VideoPlayer.iNCManagerClass has not been s

用FDT 写纯as3.0文件，当中用到了VideoPlayer

要想引入这个库只需要在flash中引用 FLVPlayback,生成swc文件，然后引用FDT中

但是遇到了：

Exception fault: VideoError: 1008: VideoPlayer.iNCManagerClass has not been set or its value is invalid: fl.video.NCManager
?? ?at fl.video::VideoPlayer/http://www.adobe.com/2007/flash/flvplayback/internal::createINCManager()
?? ?at fl.video::VideoPlayer/http://www.adobe.com/2007/flash/flvplayback/internal::_load()
?? ?at fl.video::VideoPlayer/play()

查了一些材料，

解决办法是：

加入行

? fl.video.VideoPlayer.iNCManagerClass = fl.video.NCManager;