Very very simple part drawing. Original was created in autocad long ago. Opened in Draftsight no problem, was using it as a reference to create a similar part drawing within the same work space. Suddenly, cannot save the drawing..error.. Try to open the drawing, because it shows the file being saved, but "this drawing requires recovery"... which does nothing. "error" is all it says. I cant be losing access to drawings not even created in Draftsight by using draftsight.