Hello everyone. I am a newbie and in the process of getting my first card listed. I have had it returned for editing and need to replace the cover design with an updated one, but for some reason cannot change the image. When I click the Delete button to remove the old cover image nothing happens I have tried using both IE and Firefox and refreshing - but cannot remove the old image. Should the delete happen fairly quickly or is it something that takes a long time?
Any help would be greatly appreciated.

 Thank you ever so much ... I feel so silly! Your instruction worked perfectly - I even got my updated image to show in the thumbnail when I refreshed the page.  
So now my first card has now been resubmitted - and hopefully I will have it and others up and listed  with a little less drama now that I have more of an idea of what I am doing.  
Many thanks again!