have you tried to search your computer for the filename-recovered.psd, That's where I'd start.
long story short - is there a way to recover a file, if all layers became merged and it is just a black rectangle now?
been working on it for a few hours, saving from time to time. then decided to take a break, saved again, closed photoshop. then came back, reopened it and the file was corrupted. please help,,,