Hi All!
KiCad is just apparently crashed with whole day PCB file unsaved 
Fortunately, there was a ‘’_autosave" file in the project folder (thank god!)
However I did not find any way to restore the file except manual renaming of the _autosave file to a normal one.
Yes: there is a File->Rescue function. However after file was “rescued” I did not find any posibility to save it as an actual one.
Is there any “fancy” procedure to rescue a file in KiCad?
just remove ‘_autosave-’ from the filename and off you go? (rename the org file to ‘xxx.kicad_pcb.ORG’ just to make sure you’re not doing stupid things)
But yeah, as @Andy_P has said, get used to save with [Ctrl]+[S] after nearly every step - not just for KiCAD.
…now I gotta look into that SCC thing as I always meant to have this 
I came here definitely not for the sympathy as you probably guess.
Do you have any thoughts on the SUBJECT?
@Joan_Sparky, but I just descrubed that I did exactly what you’ve described (restored the file with renaming).
So there’s no other way to do it?
afaik no.
This file contains the pcb from the last autosafe (the tracks, the footprints, the vias, the outline, etc. pp) - no magic. My autosafe.kicad_pcb files look exactly like the normal .kicad_pcb files.
If it’s not in there, it’s no where.
I repeated the procedure as you didn’t tell what happened after you removed the ‘_autosafe-’ part from the filename and restarted KiCAD.
There is no other file the kicad_pcb file relies on to function. It’s all in there.
The schematic is backed up in the .bak file. Netlists that are based on the schematic and footprint links have to be saved anyway in the .net file to get from eeschema into pcbnew…
So yeah, what happened after you renamed the file and did reload the project/pcb?
Everything was fine!