title: Wiris Plugin in Ckeditor Dont generate formula image
body: <p>i am using wiris ckeditor plugin (asp.net) ,when click on Accept Button (in Wiris Formula Plugin),in (showimage.aspx) page, an Error is showing to me that formula is null 
  when enter the
   <a href="http://localhost:9454/Admin/ckeditor/plugins/ckeditor_wiris/integration/showimage?formula=5566227c791392b1bce2a0c0553053aa.png" rel="nofollow noreferrer">http://localhost:9454/Admin/ckeditor/plugins/ckeditor_wiris/integration/showimage?formula=5566227c791392b1bce2a0c0553053aa.png</a></p>
  
  <p>address i get this status
  status  "warning"</p>
  
  <p>please help me,
  thanks.</p>