Hello folks, I in the process of updating the erratic_robot stack for ROS Fuerte and I have one problem that I am not sure how to solve. When I spawn a robot (an Erratic or PR2) in WG environment the lasers don't see any walls, and in fact you can just drive through walls as if they are not there. Here's the launch file I am using: The last line can be changed to launch a PR2 robot instead, but I got the same results. Am I missing a step? Thanks, Anton