unable to upload .flv in IIS 6.1

Question

Hi guys,

I've been trying to upload a video file on my local harddrive and it seems it cannot process the upload. The .flv MIME type is already registered on my IIS but still it cannot process upload.

Any inputs would be a very big help.

Here's the screenshots.

here's some additional screenshots

this is what happen after pressing the save button

here's my code for the upload and saving process

        private void AddNewVideo()
    {
        string VideoPath = ConfigurationManager.AppSettings["VideoGalleryUpload"].ToString();
        _videos = new VideosDAL();
        _videos.AddVideo(txtvideoname.Text, txtvideodescription.Text, fuVideo.FileName);
        if (fuVideo.HasFile)
        {
            fuVideo.SaveAs(VideoPath + fuVideo.FileName);
        }
        else
        {
            this.Master.SetCriticalError("unable to process upload!");
        }
    }