Video class, IE and 'refresh'

hi,
i've made my own video player class, which uses the flash's natural video class (flash.media.Video) and the netStream and netConnection class.
all works fine when i test it from a server (not locally) using IE 8, untill i refresh the page i get the following error:
RangeError: Error #2006: The supplied index is out of bounds.
    at flash.media::Video()
    at com.ui::MediandVideoPlayer()
    at Nana10Player/onAddedToStage()
and after that a blank screen.
the MediandVideoPlayer class's constructor looks like this:
public function MediandVideoPlayer(w:int=320, h:int=240, pausedAtStart:Boolean = false, enlargeVideo:Boolean = true, backgroundColor:int = -1, loadAndPlay:Boolean = true, debugStatus:Boolean = false)
            if (backgroundColor > -1)
                addChild(ShapeDraw.drawSimpleRect(w,h,backgroundColor));
            video = new Video(w,h);
            addChild(video);
            _pauseAtStart = pausedAtStart
            _enlargeVideo = enlargeVideo;
            seekTimer = new Timer(10);
            seekTimer.addEventListener(TimerEvent.TIMER, onSeekTimer);
            volumeLevel = 1;
            origHeight = h;
            origWidth = w;
            _loadAndPlay = loadAndPlay;
            _debugStatus = debugStatus;
any ideas?
thanks in advance,
eRez

thanks for your reply, but it doesn't seem to help me.
correct me if i'm wrong - but when i refresh the IE, the swf reloads, so the video class wasn't created yet, so how can i remove it?
one thing i did find (though it didn't really help me yet) is that it has something to do with IE's cache - once i go to the IE's 'temporary Internet files and history settings' window (through the options window), and select to check for newer versions of stored pages 'every time i visit the website' (the first radio button option) - i don't get this bug anymore. once i turn it back to 'automatically' - the bug is back.
more ideas?

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