title: Mechanical Turk - can't view HIT, appears blank
body: <p>I m trying to setup a few image categorization tasks on Mechanical Turk sandbox developer version. When I try to view the HIT(the annotation image), it appears blank. I clicked on the 'Accept HIT' button but I still couldn't see anything.</p>
  
  <p>In order to make sure that nothing was wrong with my project setup in particular, I signed in as a worker to accept HITS on other projects involving image categorization. I still continue to see a blank image in their categorization projects, where the image to be annotated is supposed to be displayed.</p>
  
  <p>Can anyone help with this problem?Thanks.</p>