The reason why that file doesn't load is that that isn't their save file. The save file is stored in C:\Users\[your username]\Saved Games\Pokemon Rejuvenation
The ditto is probably in the cemetery. Remember that it can take any form.
Hi, I am this moron that can't obtain save files properly.
I've checked everything in the graveyard that I can possibly think to check, and nothing is ditto.
Sorry for providing the wrong file, here is the correct one (I hope):
Game.rxdata