v. 0.1.2 is out:
Dec 16, 2009 v. 0.1.2
1) Fixed a bug where robots would move diagonally.
2) Changed distance calculation so robots converge on character better.
3) Changed exit placement so it would not be unreachable.
I couldn't reproduce the unreachable exit bug so I just changed the placement routine to not place an exit at the border. I hope it fixes it. It seemed to work fine for me.