title: Magento 1.7 Import/Export Hanging
body: <p>After importing my category structure into Magento 1.7.0.2, when I attempt to use the System->Import/Export Import functionality for anything, it simply hangs after pressing 'Check Data' button.</p>
  
  <p>To test whether this is relating to the size of the csv that I am attempting to process,I have most recently tested it with a 5 line, 2 column csv. The 'Please Wait' message is shown with the spinning loading wheel. This persists indefinitely. </p>
  
  <p>Any advice/suggestions greatly appreciated.</p>
  
  <p><img src="https://i.stack.imgur.com/d1hHO.png" alt="enter image description here"></p>