OpenFilePicker not working on Windows Phone 8 (Specified method is not supported)

Question

I am trying to just pick a file using:

private async void Button_Click_1(object sender, RoutedEventArgs e)
{
    try
    {
            FileOpenPicker openPicker = new FileOpenPicker();
            openPicker.ViewMode = PickerViewMode.Thumbnail;
            openPicker.SuggestedStartLocation = PickerLocationId.PicturesLibrary;
            openPicker.FileTypeFilter.Add(".jpg");
            openPicker.FileTypeFilter.Add(".jpeg");
            openPicker.FileTypeFilter.Add(".png");

            StorageFile file = await openPicker.PickSingleFileAsync();
            if (file != null)
            {
                // Application now has read/write access to the picked file
                txt.Text = "Picked file: " + file.Name;
            }
            else
            {
                txt.Text = "Operation cancelled.";
            }

    }
    catch (Exception exception)
    {
        txt.Text = exception.Message;
    }
}

...but It throws an exception: `Specified method is not supported.";

I copied and pasted the code from the Windows Phone 8 docs. None of their samples work. I thought that maybe I am missing a Documents capability/Contract or whatever but they don't even exist in VS for Phone apps.

Why won't this work?

I have tracked it down to the very first line of the try:

FileOpenPicker openPicker = new FileOpenPicker(); // this is the line the exception is thrown on.

Answer 1

According to the MSDN-forums and an answer from what i assume is a MS employee (here):

We do not currently support choosing files other than photos or choosing files from other Store apps.

So it looks like you are stuck with the PhotoChooserTask instead of FileOpenPicker.