Bug Forbidden Island

It happened to me three times in a row after killing Riott when I turn Then go to the side Opposite room to That Is Where the fire pit to kill ArcShield to my surprise this and I never had this happen 3 times and solve this please had already made the dungeon before and had not given me all this trouble started after the maintenance of the day 08/17/2011

here the picture's

http://i46.servimg.com/u/f46/11/36/74/74/cabalv11.jpg
http://i46.servimg.com/u/f46/11/36/74/74/cabalv12.jpg
http://i46.servimg.com/u/f46/11/36/74/74/cabalv13.jpg
http://i46.servimg.com/u/f46/11/36/74/74/cabalv14.jpg