title: PHPExcel exception: "Could not close zip file ... "
body: <p>I am using XAMPP a Mac for local development, but I used this code at work (using Windows and an otherwise identical development environment) and it worked fine:</p>
  
  <pre><code>$objPHPExcel = new PHPExcel();
  $sheet       = $objPHPExcel-&gt;createSheet();
  $sheet-&gt;fromArray($a);
  ...
  $objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
  //$objWriter-&gt;save('P:/Projects/Mess3/Sadness.xlsx');
  $objWriter-&gt;save('/Users/tjb1982/Desktop/sadness.xlsx');
  </code></pre>
  
  <p>The commented-out text works with my Windows system at work. I tried to output the file to 'php://output' and got a garbled mess (is that what is to be expected?).</p>
  
  <p>I can't seem to find anyone who is experiencing this problem outside of those who had permissions problems or had the file open when they were trying to save it. Please help!</p>