I tried using the /loadgame command to load my save file (because I'd like to unlock the game in single player with this mod). However, nothing happens. I tried /loadgame nuclearthrone.sav, /loadgamenuclearthrone.sav, and /loadgame nuclearthrone. I know some of the commands work, like /color (I changed mine to red). However, this is not the case for /loadgame. How do I use this command in single-player?