title: as3xls > Number of sheets always 0
body: <p>I'm trying to parse a .xlsx file exported from a google docs. Right now I'm not trying to access it online, I'm manually downloading it and copying inside my application.</p>
  
  <p>I've read <a href="http://code.google.com/p/as3xls/wiki/Tutorial" rel="nofollow">the tutorial</a> provided online, and this is the code I have right now:</p>
  
  <pre><code> var contentBA:ByteArray = new ByteArray ();
   var fileToLoad:File = File.applicationDirectory.resolvePath("textLabels.xlsx");        
   var stream:FileStream = new FileStream();
   stream.open(fileToLoad, FileMode.READ);
   stream.readBytes (contentBA, 0, contentBA.length);
   var xls:ExcelFile = new ExcelFile();
   xls.loadFromByteArray(contentBA); 
   trace ("N SHEETS ", xls.sheets.length);
  </code></pre>
  
  <p>but the number of sheets it's always 0. I tried to change the file and to load the most simple excel ever but it keeps saying 0.</p>
  
  <p>Is it a problem of the ".xlsx" extension? Am I missing something?</p>