title: WPF - Resource not loading from Generic.xaml
body: <p><b>Themes\Generic.xaml:</b></p>
  
  <pre><code>&lt;ResourceDictionary
      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"&gt;
      &lt;ResourceDictionary.MergedDictionaries&gt;
          &lt;ResourceDictionary Source="WPF Commons;component/Controls/Layout/Foo/FooItem.xaml" /&gt;
      &lt;/ResourceDictionary.MergedDictionaries&gt;
  &lt;/ResourceDictionary&gt;
  </code></pre>
  
  <p><b>Controls\Layout\Foo\FooItem.xaml:</b></p>
  
  <p></p>
  
  <pre><code>&lt;Style TargetType="{x:Type l:FooItem}"&gt;
      &lt;Setter Property="Template"&gt;
          &lt;Setter.Value&gt;
              &lt;ControlTemplate TargetType="{x:Type l:FooItem}"&gt;
                  &lt;Border&gt;
                      &lt;ContentPresenter ContentSource="Header" /&gt;
                  &lt;/Border&gt;
              &lt;/ControlTemplate&gt;
          &lt;/Setter.Value&gt;
      &lt;/Setter&gt;
  &lt;/Style&gt;
  </code></pre>
  
  <p></p>
  
  <hr>
  
  <p>If I copy the entire style into my usercontrol resources it works fine. But, if I don't, the usercontrol shows up empty. In Expression Blend 4, I right-clicked and chose <code>Edit Template</code>>, but it won't let me select <code>Edit a Copy...</code> which leads me to believe that something is severely wrong and the Generic.xaml isn't loading properly. I figure it's Generic.xaml because if I remove the MergedDictionary call and copy/paste the xaml style directly into Generic.xaml it still doesn't work.</p>