Hi,

The last post only works with two frames, I suspect you have more so try
PHP Code:
stop();

stage.addEventListener(KeyboardEvent.KEY_DOWNpressAnyKey);

function 
pressAnyKey(event:KeyboardEvent)
{
    switch (
event.keyCode)
    {
        case 
Keyboard.LEFT :
            
prevFrame();
            break;

        default :
            
nextFrame();
    }