I am trying to write an image to a word document using WordDocumentWriter.

I took the code from the samples browser and baseline and added the following lines of code to write an image to word document. I get the below error when AddInlinePicture method is executed. The 

                docWriter.StartParagraph();
                // Add image
                docWriter.AddInlinePicture(LoadImage(@"/SilverlightApplication1;component/a.png"));
                docWriter.AddNewLine();
                docWriter.EndParagraph();

LoadImage method below. A valid bitmapimage object is returned by this method.

        public BitmapImage LoadImage(string relativeUriString)
        {
            // Get the image stream at the specified URI that
            // is relative to the application package root.
            Uri uri = new Uri(relativeUriString, UriKind.Relative);
            StreamResourceInfo sri = Application.GetResourceStream(uri);
 
            // Convert the stream to an Image object.
            BitmapImage bi = new BitmapImage();
            bi.SetSource(sri.Stream);
            Image img = new Image();
            img.Source = bi;
 
            return bi;
        }

Error message on calling AddInlinePicture method: