title: Applescript will not open Excel 2011 workbook
body: <p>Can somebody please tell me what is wrong with the following applescript</p>
  
  <pre><code>set sourceFile to (choose file with prompt "Choose source files" of type {"XLS6", "XLS7", "XLS8", "XLS", "TXT"} with multiple selections allowed without invisibles)
  tell application "Microsoft Excel"
  -- activate
  open workbook workbook file name sourceFile
  end tell
  </code></pre>
  
  <p>I am getting the following error</p>
  
  <pre><code>error "Microsoft Excel got an error: Can’t continue open workbook." number -1708
  </code></pre>
  
  <p>The script works if I hard code an individual file path, so problem must be in the set sourceFile line, but I need to be able to choose a file as it will not always be the same. </p>