Hey, you'll probably hate me, but I found another bug
I thought i'd try out the editor, so I made a map that used the whole game area. I walked the sheep all the way to the left, and:
org.newdawn.slick.SlickException: Game.update() failure - check the game code.
Seems it's because the sheep tried to go outside of the game area.
I hope this is of some use as it's quite an ambiguous error.
EDIT: Also thought I would mention that it would be nice to have the sound and music icons available on the menu and editor screens. ^_^
EDIT2: Just found that, using the scrollwheel to select tiles on the editor, the Blue Dog wouldn't place, but placed the ground(?) tile instead. It seems it still places the bubble, just not the graphic (it places the collision box, but it doesn't respond to clicks).