I had the same problem, read this post and msg'ed support. The answer was to try reducing the screen resolution, try running at a lower clock speed, run as administrator, etc. That *might* work, but while waiting for that answer, I also found another solution.
Going on the assumption that it was some game state that was causing the crash, I started a completely new game and did only the minimum things necessary to get to the Temple. To get there, you will need the talon, the rope and the illuminyte rocks (otherwise the keeper won't talk to you when you come back). To get back to the lighthouse, you'll need the magnet and the whistle. Just work backwards from there and do only the minimum (puzzle for rocks, fairy dust, original sword and token, crank for carrots, thermos and milk, and meat).
Can't say whether it will work for everyone, but it did for me.