title: Microsoft Ribbon for WPF: ribbon:RibbonApplicationMenu issue
body: <p>Using the excellent <a href="http://10rem.net/blog/2010/08/02/announcing-microsoft-ribbon-for-wpf-rtw" rel="nofollow noreferrer">Microsoft Ribbon for WPF</a> for .NET 4 (not the .NET 4.5 build in class) I'm trying to achieve a ribbon like in Office 2010:</p>
  
  <p><img src="https://i.stack.imgur.com/ca1nI.png" alt="Office 2010 Ribbon"></p>
  
  <p>However I cannot get the <strong>File</strong> text to be shown on the <em>ribbon:RibbonApplicationMenu</em>.</p>
  
  <p>If I change the project Wizard generated code from</p>
  
  <pre><code>&lt;ribbon:RibbonApplicationMenu SmallImageSource="Resources\SmallIcon.png"&gt;
  </code></pre>
  
  <p>to</p>
  
  <pre><code>&lt;ribbon:RibbonApplicationMenu KeyTipService.KeyTip="F" Label="File"&gt;
  </code></pre>
  
  <p>I get this:</p>
  
  <p><img src="https://i.stack.imgur.com/mrFQ8.png" alt="My Ribbon"></p>
  
  <p>Notice that the text <strong>File</strong> is not shown. What am I missing?</p>