title: Invalid file name: must contain only [a-z0-9_.]
body: <p>I have file <code>/FavoriteTwitterSearches/res/menu/FavoriteTwitterSearches.xml</code> in my android project. When I want to run the project - i get error <strong>"res\menu\FavoriteTwitterSearches.xml: Invalid file name: must contain only [a-z0-9_.]"</strong>. But if I change the file name for a-z,0-9 there is another errors in <code>/R.java/R/string/confi</code> 
  like </p>
  
  <p>Multiple markers at this line</p>
  
  <pre><code>- Duplicate field R.string.confi
  - Syntax error on token "rmTitle", delete 
  </code></pre>
  
  <p>or 
  Multiple markers at this line</p>
  
  <pre><code>- Syntax error on token "rmMessage", delete 
   this token
  </code></pre>