so I spent about 45 minutes working on a pepakura file, getting it all unfolded and pretty, but when I went to save it, it said I didn't have a registered keycode. turns out I need to buy one to save files. I don't want to loose my progress and what if I want to give it to you guys? any suggestions? I don't want to spend $40 for a software I rarely use to change models since I don't know yet how to 3d model. I only use it to view, print, and rearrange pieces, with some minor changes...