A little late, but with v1.3-beta7 I have experienced that problem, normally I just do ctrl + s, close the program and turn off the PC, but when I turn it on, sometimes the file disappears, sometimes it is ‘’ recover files ‘’ ,sometimes not, it’s getting on my nerves.
Yesterday I saved manually, made sure the progress had been saved, rebooted my PC and * pam * disappeared.
Where are you saving your files? It sounds like you might be saving them to some volatile directory that gets cleared on reboot.
Aseprite’s not going to delete your files. If they’re saved (as you made sure) and only disappear after a reboot, then I’d be surprised if this was Aseprite’s fault.