1st things 1st, sry for my English, i'm from Poland kappa.
Just a normal game, no mods, ~150h played, map to catch achivements on Steam. Unexpected crash while saving map (just after getting achivement "launch rocket with raw fish inside") with no error message, no log or any info "what happened". After re-launch Factorio says the save is corrupted. I tried to open it with winrar - looks like level.dat is broken.
No auto-saves - saving on my wooden PC takes ~3 minutes so i disabled them :G
I feel fucked by life...
Link to save file: https://drive.google.com/file/d/0B7yFJWfXRc3nOUVYVnhlS0k1Nkk/view?usp=sharing