Hi all, I got stuck while installation. See below for the detail. Any thoughts would be appreciated. Phenom: - While running "sudo apt-get install ros-diamondback-desktop-full" after downloading a few hundred MB of data, it suddenly quitted and showed "E: Unable to locate package ros-diamondback-desktop-full" - Output of apt-get update: https://docs.google.com/document/d/1yxY6w5v6jedHXnc3omkEwCkxlT4abejfEtz3tF-D9ek/edit?hl=en_US <- For the ROS part, the result is the same on another computer that successfully installed diamondback. - Output of installable ROS packages on the computer. You'll see diamondback packages are missing: https://docs.google.com/document/d/10DGLH84UZKyXp1itsPAZl8S0m0ZdsVUZ1R8ZpSyiIfw/edit?hl=en_US Tried workaround: - The things discussed in the pages below are already tried. http://answers.ros.org/question/702/unable-to-find-install-package http://answers.ros.org/question/120/troubles-installing-ros-c-turtle-base - sudo rm /var/cache/apt/archives/*ros* - Reboot OS. Other: As mentioned earlier, another computer which is on the same network has successfully installed diamondback. And after apt-get update on the same machine, apt-get still shows ros-diamondback as installable packages. Env: Ubuntu 10.10 Maverick Thanks in advance. Isaac