Hello. If you want to use backup to folder, select option under folder, not option to add tilde to file extension - see your screen.
Did you really used PSPad project (left panel) - file with PPR extension? Did you try to open your project from project recent files? PSPad doesn't delete project files or any other files you edit. If your project file is deleted, you did it outside PSPad (maybe accidentaly). -- <http://forum.pspad.com/read.php?2,63171,63181> PSPad freeware editor http://www.pspad.com
