[Peter Ahlstrom]

This is frustrating. I know I'm not the only one who leaves programs and documents open for days at a time (for sure I know that my boss does the same thing). I will certainly try to close the files more often, but this is so foreign to the way I work—I generally keep a file open (in whatever program) until I'm totally done with it.

The issue didn't cause the deletion of any of the html files in the ePub, so those are clearly treated differently when saving, even though they also appear in the tmp folder. Maybe there should be some kind of error checking when saving? If the tmp folder is gone, update the on-disk zipfile (i.e. using zip -u) with any text files left open in the program, instead of creating a new zipfile to replace the old one?

To eschwartz: But if the machine never gets rebooted, then the tmp files would build up.