title: PHPExcel create a new file
body: <p>I am trying to create a new Excel file by using PHPExcel library with this code :</p>
  
  <pre><code>   include ('/lib/PHPExcel/PHPExcel/IOFactory.php');
     include ('/lib/PHPExcel/PHPExcel.php');
  
     $objPHPExcel = new PHPExcel();
      $objPHPExcel-&gt;getProperties()
     -&gt;setCreator("admin")
     -&gt;setLastModifiedBy("admin")
     -&gt;setTitle("Test")
     -&gt;setSubject("template file")
     -&gt;setDescription("template file")
     -&gt;setKeywords("Prout");
     $objPHPExcel-&gt;setActiveSheetIndex(0);
     $objPHPExcel-&gt;getActiveSheet()-&gt;SetCellValue('A1', 'Hello');
     $objPHPExcel-&gt;getActiveSheet()-&gt;setTitle('Simple');
     $objWriter = new PHPExcel_Writer_Excel2007($objPHPExcel);
     $objWriter-&gt;save(dirname(__FILE__).'/file/test.xlsx');
  </code></pre>
  
  <p>The file is created, but when i try to open it my excel 2010 tells me there is unreadable content inside the file and i can't open it.</p>
  
  <p>I tried a different way on a different forum but i am always arriving to the same result. I do this manipulation by using Ajax with jquery. Can this be the cause of this error?</p>