Hey! I had the same issue for several days. I tried everything suggested too. Checked for updates, deleted the game, re-downloaded on external drive. Didn’t work. Deleted again, downloaded on the PS drive, didn’t work.
Then I checked the game’s application files and I saw that it created 5 files at the same time. “Save Game”, “backup”, “gamesavedata”, couple of them were created twice for some reason. So I deleted all and left only the biggest “SaveGame” file and one backup file. Restarted the system and the game started like a brand new game, but my saved game was there.
