I have photoshop 7, cs3, cs4, I did try to open it with all 3 versions I have and it still didn't work.
I have one program called camtasia, is great to record screen or edit video files and then save them in many formats. This program keep video files in temp folder until you restart your computer, they also give option to clear the temp folder when you really sure you have saved all you need. Happened many times this program saved me a lot of time when I was making mistakes. Would be great if adobe did the same for photoshop and illustrator.  But I guess they never care about what we need. And I am sure we are not the only one who make this mistake, saving files like this, not to mention when photoshop just crashes during saving.