Need help with this as3 code that used to work in Flash CS5.5 but now is not working with Flash CS6.

I got a FLVPlayback instance called myVideo in the stage and Im trying to capture the "seek" event using this code:

**import fl.video.\*;   

import fl.video.FLVPlayback;  

import fl.video.VideoEvent;   

myVideo.addEventListener(VideoEvent.SEEKED, seekHandler);  

function seekHandler(myEvent:VideoEvent) {  

    trace("seeked");  

}**

At this point I got the next error when I publish:  

**1119: Access of possibly undefined property SEEKED through a reference with static type Class.**  

I have readed something about strict mode in as3.. I uncheck that option and now I got this output when I try to seek another point in the video player:  

**TypeError: Error #1034: Type Coercion failed: cannot convert fl.video::VideoEvent@4697c239 to flash.events.VideoEvent.**  

Can anybody show me what Im doing wrong if this works on flash CS5.5. Thanks!!