Parece que não há nada que eu possa fazer com esta versão.
[left behind .tmp files] are temporary scratch files that can be safely discarded. There is nothing useful you can do with them. [they store layer and history data but not a restorable version of the file itself].
With Photoshop CS6 there may be auto-save recovery files as well nearby, but they're always .psb files, and you don't have to do anything special - Photoshop will automatically open them the next time you run it after a crash. Photoshop CS5 did not have the auto-recovery feature; if it crashes you lose your work.
Veja os fóruns da Adobe para mais informações