Feral Heart

Okay, so I'm not sure what happened, but I was playing Feral-heart, in a private map, when it suddenly crashed. I, of course, wasn't concerned because frankly, it was a large and laggy map and Feral-Heart crashes every so often anyway. But, when I got on the next time, all the trees on the log in screen had disappeared. When I had logged in, the character screen was blank except for the buttons and the characters themselves. Also, the map I was in and oddly enough, Lonely Cave was gone. Sooo... I can't make new characters or save my existing characters until I can get help. I've tried re-downloading everything completely and it didn't work.