Hi, I'm very new to editing/drawing software so please explain in simple terms :) My son has been using Photopad to add images and drawings. He drew a picture using the drawing tool and then saved his work. He started to do some shading at which point everything froze so he closed down, clicked don't save and re-opened his project. However, when he re-opened it, the image he'd drawn before saving had disappeared and we can't see how to get it back. There is no undo available. The drawing tool for that image is still showing in the list on the right.