Dear fellow ROS users, When I try to use rosinstall to check out code with an overlay file, rosinstall complains about No ROS_ROOT defined, while the environment variable has been properly set up. I am looking at the following tutorial: http://www.ros.org/wiki/rosinstall/NewVersion I suspect that I haven't added the rosinstall layout to the directory where I check out the code. However, when I try to add a rosinstall layout, it complains about maximum recursion depth exceeded. I'm running ROS 1.1.14. Thanks for your help! Huan