I'm using Cartoon Animator 4 Pipeline on a 2019 MacBook Pro with the latest operating system. Just worked 8 hours in composer mode replacing and resizing sprites, moving bones, etc. It was very difficult work and so I was careful to press "command S" every few minutes. Finally I finished my work and closed Cartoon Animator. When I closed it I was not asked if I wanted to save the project. This came as no surprise since I had already pressed command S for the thousandth time. Then later when I reopened the project I was back to square one. NONE of the work I had completed in 8 hours had been saved. It was just as if I had never made even a single edit to the file. I did an exhaustive search of my entire hard drive but was unable to find a file with the lost work.