I was working on a drawing this weekend and had saved my progress a few times over the last few days before putting my laptop in sleep mode or shutting it down completely. Every day when I'd open the file back up, everything looked as it did when I had saved it the night before. However, I went to open the file this morning and everything is just... gone. The file is still in the folder, and it will open up just fine without any errors, but when all of lines, circles, layers, blocks, everything I created is gone. I am using Version 2.2 and my laptop operates on Windows 10. I have used this program several times without issue, so I'm really confused here. Please help.