The old corupt save game issue a new variation

[strawbqwerty]

I have been playing with no save game issues. I only manually save. I have sky rim engine fixes installed. Check the settings file in sky rim engine fixes and fixes for corrupt save files are set correctly. Last time I played I was able to save and exit the game. This was the 912th save with no problem. Then I was able to restart the game with the last save with no issues. I have not changed anything at all with the game nothing nada zip and zilch. This time I started the game and I have the message save game is corrupt and can not be read save data does no match skse co save . Got me why this has happened.