title: "Invalid entity model" error while exporting csv file for products
body: <p>while <strong>exporting a products csv file</strong> from backend magento admin panel, it prompts me the following error when i click continue to generate the csv file.</p>
  
  <p><strong>"Invalid Entity Model"</strong></p>
  
  <p>I am using magento 1.6.2 CE.</p>
  
  <p>** edited **</p>
  
  <p>I am using magento default export/import services mean from admin system -> configuration -> export/import .....</p>
  
  <p>plz ask me any question if it is still not clear .</p>