perunalokki DoctorDAM
If the game launched without the save files you can use the original saves minus one of the last saves you made.
The game will always crash if a single save is corrupted, so it is usually only one save that is affected, and it is always one of the most recent ones.
So, copy all the saves except the five most recent ones back to the original folder and test them.
If the game still runs, you can copy the last five saves back one by one until the game stops starting.
The last saved you copied over is corrupted and needs to be deleted.
The rest will work just fine.