title: XAML: The property 'Resources' is set more than once
body: <p>I'm getting the following error: </p>
  
  <blockquote>
    <p>The property 'Resources' is set more
    than once.</p>
  </blockquote>
  
  <p>Here is my XAML:</p>
  
  <pre><code>&lt;UserControl.Resources&gt;
      &lt;!--Resource dictionaries for framework stuff--&gt;
      &lt;ResourceDictionary&gt;
          &lt;Style x:Key="MultiLineTextBox" TargetType="TextBox"&gt;
              &lt;Setter Property="BorderThickness" Value="0"/&gt;
              &lt;Setter Property="TextWrapping" Value="WrapWithOverflow"/&gt;
          &lt;/Style&gt;
          &lt;ResourceDictionary.MergedDictionaries&gt;
              &lt;ResourceDictionary Source="/View;component/Common/ResourceDictionary.xaml"/&gt;
          &lt;/ResourceDictionary.MergedDictionaries&gt;
      &lt;/ResourceDictionary&gt;
  
      &lt;!--Convertors needed for proper display--&gt;
      &lt;c:CollapsedIfNegative x:Key="CollapseIfNegative"/&gt;
      &lt;c:VisibleIfNegative x:Key="MakeVisibleIfNegative"/&gt;
      &lt;c:ErrorCodeToString x:Key="ConvertErrorCodeToString"/&gt;
  &lt;/UserControl.Resources&gt;
  </code></pre>