Progress dialog stays up forever if WSDL url is slightly incorrect

I had a new sample service running locally with Spring-WS in Tomcat.  I created a new project in SoapUI and entered what I thought was the correct WSDL address, but it was slightly wrong.  Instead of ending with "holiday.wsdl", my URL ended with "HolidayRequest.wsdl".  When I clicked OK, it displayed a progress dialog and chugged for a bit, but then failed with exceptions because of the invalid URL.  I realized soon after what the correct URL was and recreated the project successfully.

However, what I realized was that the progress dialog from the initial attempt was still visible.  I know it was from the original request because the URL in the dialog was still visible.  I tried cancelling the progress dialog, both with the window "X" and with the "Cancel" button.  Nothing works.  The dialog isn't modal, so I can still continue to use the application, but it's a little annoying.  I'm sure it will go away if I kill SoapUI and bring it back up again.