Does ROS and all related packages work under 64-bit Ubuntu 10.04 LTS (- the current long term support version, released in April 2010, codenamed Lucid Lynx) ? If not, what Ubuntu Linux version is best to use so I may immediately have ROS and all related packages working (including Player/Stage/Gazebo and URBI) without encountering compatibility problems? Sam Q. _________________________________________________________________ Hotmail has tools for the New Busy. Search, chat and e-mail from your inbox. http://www.windowslive.com/campaign/thenewbusy?ocid=PID28326::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_1