I posted this problem a few days ago, but I fear it may have been in the wrong place.
In earlier versions I was given the option of enabling the Auto Save feature, and choosing the time intervals between saves. I chose every 2 minutes. If it crashed or was shut down in a reboot, the images on which I was working were recovered with their layers intact. Nothing was lost. I do not have that option in Version X4.

Nothing is ever saved with Version X4
I am likely missing something embarrassingly simple and I would love to know what it is.
Many thanks,
Muriel!
