User blog comment:Stormforce702/VERY Strange Bug/@comment-4905248-20120315065755

go to the start thing and type terraria into run then go to the folder that is located in my games then go into worlds and rename the terraria.wld.bck (wat the world was probably called if not world 2 or 3 ect) into terraria.wld then play and it should have worked this will work for players and worlds as well just do the same only press on the players folder hope it helped