Custom WPF control with Unity failing to resolve

public class RichTextBoxExtended : RichTextBox
{
    static RichTextBoxExtended()
    {
        //DefaultStyleKeyProperty.OverrideMetadata(typeof(RichTextBoxExtended), new FrameworkPropertyMetadata(typeof(RichTextBoxExtended)));
    }

    public byte[] Text
    {
        get { return (byte[])GetValue(TextProperty); }
        set { SetValue(TextProperty, value); }
    }

    // Using a DependencyProperty as the backing store for Text.  This enables animation, styling, binding, etc...
    public static readonly DependencyProperty TextProperty =
        DependencyProperty.Register("Text", typeof(byte[]), typeof(RichTextBoxExtended), new UIPropertyMetadata(null, new PropertyChangedCallback(TextChangedCallback)));

    private static void TextChangedCallback(DependencyObject obj, DependencyPropertyChangedEventArgs e)
    {
        RichTextBoxExtended richTextBoxExtended = obj as RichTextBoxExtended;
        richTextBoxExtended.ChangeText(e);
    }

    private void ChangeText(DependencyPropertyChangedEventArgs e)
    {
        //clear out any formatting properties
        TextRange range = new TextRange(base.Document.ContentStart, base.Document.ContentEnd);
        range.ClearAllProperties();

        //load bytes into stream, load stream into range
        MemoryStream stream = new MemoryStream(e.NewValue as byte[]);
        range.Load(stream, DataFormats.Rtf);
    }
}

Above is the custom control...

XAML implementing custom control...

<Grid>
    <controls:RichTextBoxExtended x:Name="Document" Text="{Binding Path=File}">
    </controls:RichTextBoxExtended>
</Grid>

Associated VM...

public class FileViewerViewModel : AViewModel
{
    private byte[] _file = null;

    public FileViewerViewModel(ILoggerFacade logger)
    {

    }

    /// <summary>
    /// Gets or sets the <seealso cref="DataFormats.Rtf"/> file representation as a <seealso cref="byte[]"/>
    /// </summary>
    public byte[] File
    {
        get 
        {
            return _file;
        }
        set 
        {
            _file = value;
            RaiseChanged(() => this.File);
        }
    }
}

Finally..if I call...

FileViewerView view = _container.Resolve<FileViewerView>();

It fails.

Resolution of the dependency failed, type = "cyos.infrastructure.Views.FileViewerView", name = "". Exception message is: The current build operation (build key Build Key[cyos.infrastructure.Views.FileViewerView, null]) failed: Object reference not set to an instance of an object. (Strategy type BuildPlanStrategy, index 3)

If I remove the binding from within the XAML...

<Grid> 
    <controls:RichTextBoxExtended x:Name="Document">
    </controls:RichTextBoxExtended>
</Grid>

Everything works without a hitch...no problems at all...ideas?

EDIT:

Switched to creating a new instance, bypassing Unity. Issue is still in the same place, exception at construction of FileViewerView at InitializeComponen开发者_JS百科t() with "Object reference not set to an instance of an object."

at System.Windows.Markup.BamlRecordReader.ProvideValueFromMarkupExtension(MarkupExtension markupExtension, Object obj, Object member) at System.Windows.Markup.BamlRecordReader.ReadPropertyArrayEndRecord() at System.Windows.Markup.BamlRecordReader.ReadRecord(BamlRecord bamlRecord) at System.Windows.Markup.BamlRecordReader.Read(Boolean singleRecord) at System.Windows.Markup.TreeBuilderBamlTranslator.ParseFragment() at System.Windows.Markup.TreeBuilder.Parse() at System.Windows.Markup.XamlReader.LoadBaml(Stream stream, ParserContext parserContext, Object parent, Boolean closeStream) at System.Windows.Application.LoadComponent(Object component, Uri resourceLocator) at cyos.infrastructure.Views.FileViewerView.InitializeComponent() in c:\Documents and Settings\amciver\My Documents\dev\cyos\cyos\cyos.infrastructure\Views\FileViewerView.xaml:line 1 at cyos.infrastructure.Views.FileViewerView..ctor(FileViewerViewModel viewModel) in now...

I don't know what the problem with array, but List<byte> works.