I got one of my friends to mod my xbox save and he transfered it to his pc and basically just made me a Khajit and level 108 but when i got the file (.ess and then later .dat) it said the error above. How do i fix this?? :C
When you send him your save it should be a .exs file
He will open that .exs in Horizon, go to the contents tab, and extract the Savegame.dat to his PC Skyrim savegame directory.
Then he needs to rename the Savegame.dat to Savegame.ess.
He can now load the save on Skyrim PC. When he’s done, he needs to rename Savegame.ess to Savegame.dat
Now he can go back to Horizon, and replace the Savegame.dat with the modified Savegame.dat in his PC Skyrim savegame directory.
-OR-
You can follow those steps, and just save him the Savegame.dat renamed to Savegame.ess. He will then send back Savegame.ess/dat and all you would have to do is replace the Savegame.dat in your save, rehash & resign