Yesterday I was working in photoshop cs6 on a Psd file. It was 140 mb and when I tried to save it at 93 % it crashed. When I'm now trying to open it says "There was a problem reading the layer data. Read the composite data instead?" I click Read composite data but then it says "Could not complete your request because the file is not compatible with this version of Photoshop." And after pressing ok it doesn't do anything?
The file is corrupt on disk because of the crash.
Odds are that you won't be able to recover that file, but should go to your backups or the auto-saved version.