I also have had this issue since I updated to 1.7.1.5 yesterday. After spending several hours escaping the debug wilderness/forest loop of hell I spent awhile dying quickly to the new super zombies. Since then I have not been able to save a single character. Every time I disconnect and reconnect I am back on the beach with a new character. Please tell me I don't have to keep my computer on 24/7 to play this game. :/