If your character is stuck in a map, and your game crashes whenever you try to use that character; you don't have to worry(most likely). For my characters who were inside a user-made map to work once more, I just removed the .fhz files from my FeralHeart folder. After that, if everything is working correctly, your character will appear in a place with no terrain or sky; just click on the button to go home(usually the feather), and after going to wherever is set to your home, you should now be able to use that character without FeralHeart crashing!