public class AgunitCrashTest:SilverlightTest
{
    public Canvas MyCanvas;
    public Button MyButton;

    [TestInitialize]
    public void SetUp()
    {
        this.MyCanvas = new Canvas() {Width = 1000, Height = 1000};
        this.TestPanel.Children.Add(this.MyCanvas);
        this.MyButton = new Button(){Content = "SomeContent",Width = 200,Height = 200};
        Canvas.SetLeft(MyButton,200);
        Canvas.SetTop(MyButton,200);
        this.MyCanvas.Children.Add(MyButton);
        TestPanel.UpdateLayout();
    }

    [TestCleanup]
    public void CleanUp()
    {
        this.TestPanel.Children.Remove(MyCanvas);
        this.MyCanvas.Children.Remove(MyButton);
        this.MyCanvas = null;
        this.MyButton = null;
    }

    /// <summary>
    /// This test passes in default silverlight testing enviroment but fails in AgUnit for Resharper 6.1 enviroment
    /// </summary>
    [TestMethod]
    public void AgUnitFailureTest()
    {
        TestPanel.UpdateLayout();
        this.MyButton.GetBounds();
        var t = this.MyButton.TransformToVisual(this.MyCanvas);
        // This test passes in default silverlight testing enviroment but fails in AgUnit for Resharper 6.1 enviroment        
        var bounds = new Rect(t.Transform(new Point(0, 0)), this.MyButton.RenderSize); //place of the crash
        Assert.AreEqual(200,bounds.X);
        Assert.AreEqual(200,bounds.Y);
        Assert.AreEqual(bounds.Width,MyButton.ActualWidth);
        Assert.AreEqual(bounds.Height,MyButton.ActualHeight);

    }
}

SDeKock: This could possibly be fixed by allowing the U.I. to show up. You can specify this in statlight by passing WindowGeometry object witht eh BrowserWindowState = BrowserWindowState.Normal.

Not sure this should become a hard-coded solution in AgUnit. Possibly look to make this a configuration option?