Hi there, I just upgraded to 2.9.5 64 bit, and I'm running windows 8.1.
In a recent painting, I had the create backup feature turned on, but autosave turned off.

After half an hour of work I saved the file once manually. Seemed to work, no errors.
Then at some point I saved again, the hour glass pointer wouldn't disappear, but I could still work as per usual. I did so for about 5 minutes, but a bit worried, I then saved again. It again seemed to work. I closed the document, it asked me to save again. i did. No error message. Closed down fine.

On reopening Krita, the .kra file was nowhere to be found. In the directory, there were about 4 files named "filename.kraqC4984.new" Where the bolded bit was different in each. They are all only about 3-4 MB, so I can't imagine these are my layered backup files. They won't open in Krita.

I upgraded my intel HD drivers as suggested in the install notes.
I'd love to recover my file, but more importantly need to know if this is a known bug of some sort.

Any help would be appreciated.

I will repost this in the for windows thread in the hope that it gets some answers before I go reporting bugs