Ice Dragon Does not close properly when opened from a link

If I click on a link in an email or document that opens a word or PDF document via a web site, Ice Dragon opens (appropriately) and then the document displays. If I close Ice Dragon and then try to click on another link I get the Ice Dragon is already running but not responding message. If I have Ice Dragon already open to a different page and then click the link, everything works fine. The problem only happens if a I click a link and Ice Dragon is not open. I know I can go into Task Manager and kill Ice Dragon, but this is pain to have to do this every time I open from a link. I disabled all add ons and still have this problem. Any suggestions?