https://docs.google.com/forms/d/1__VM5KU3Sq6ipR473hMeclZQQ3bC6AsCqEiLAxZEZgs/viewform?c=0&w=1
This was added to the wiki for the Canada MapRaid, but it should be useful here when we get our (seemingly chronic) PUR error-message problems.
You do need to get an account with imgur.com, a photo hosting site, because in addition to the permalink, the form requires a screenshot.