2dnav_erratic page is empty: http://wiki.ros.org/navigation/Tutorials/RobotSetup states “Note: This tutorial assumes familiarity with ROS and how to use it. Please see ROS Documentation. Also, the 2dnav_erratic package provides a simple example of a package created by following this tutorial for the Videre Erratic platform.” , but http://wiki.ros.org/2dnav_erratic has no content. And there is no 2dnav_erratic in github: https://github.com/search?utf8=✓&q=2dnav_erratic&type=Repositories&ref=advsearch&l=&l=
