mr.mojorisin

I spent hours on a project, saved it fine, I had to restart my computer and when I went back into paint.net and tried to open the file it said "There was an error reading the file from the media". if anyone knows how I can access my project again I would be very greatfull for any tips. I tried opening it with other programs but because I saved it as a pdn file,because I thought i was just going to continue working on it, it won't open anywhere else. Thank you