I've tested this method in CSP and it works!!
Share this to save a life!
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aXL99 _(:3 」∠ )
OK!! So I think I have a fix for this on Windows.
If this happens, copy all your layers onto a new file and save it just in case.
Then without closing CSP, sign out of Windows, sign back in and open CSP again. It *should* restore the file from the moment you logged off.
SAVE THAT IMMEDIATELY.
aXL99 _(:3 」∠ )
So heads up CSP5 still has the legacy saving error, I'm going to test their "save after every operation" function to see how much work can be recovered after a crash like this.