Object creation by using xaml fails

 I use the XamlReader.Load to create a grid on runtime. After updating to beta 2, I cannot access the <Grid.Resources> anymore.

 UIElement grid = XamlReader.Load(xaml) as UIElement;
 Although the grid's resource dictionary is not empty, the Count property is 0.

((Grid)grid ).Resources.Count --> 0
I was using the XAML for object creation what worked fine with beta 1. But now, as the resource dictionary seems to be empty after loading the xaml, that's not working any longer. Any idea?
 
 
 
 
 
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