I have been using this sketchup model in d5 for a few day, and today all of a sudden when I tried to open the file, I saw the d5 file is completely empty. It still shows the render in the thumbnail, but when I open the file, its all wiped out. How to get my work back. For now, I have lost all my render work I’ve been doing for the past couple of days. D5 team, please do something asap.