A great game but I'm stuck on the lava gear puzzle in greenland. I have the gears and faucets in place and the hints say the gear is in the middle but nothing happens when I click there or I don't see anything there. after alot of clicking I found the gears but they are invisible to me until I click on the spot. Now another thing is invisible to me the bear sense of smell isn't showing up. I think there is a bug in that level.