Hi JIA, Please ask these questions on answers.ros.org. http://www.ros.org/wiki/Support thanks, Ken On Thu, Nov 3, 2011 at 9:46 AM, JIA Pei wrote: > > > Hi, all: > > Environment:Ubuntu 11.04 Natty . > When I tried to "sudo apt-get install ros-electric-desktop-full" > I got the following error messages: > " > The following packages have unmet dependencies: >  ros-electric-desktop-full : Depends: ros-electric-eigen (= > 1.6.0-s1319526895~natty) but it is not going to be installed >                              Depends: ros-electric-geometry-tutorials (= > 0.1.3-s1319630321~natty) but it is not going to be installed >                              Depends: > ros-electric-orocos-kinematics-dynamics (= 0.2.3-s1319526922~natty) but it > is not going to be installed >                              Depends: ros-electric-slam-gmapping (= > 1.2.4-s1319998576~natty) but it is not going to be installed >                              Depends: ros-electric-stage (= > 1.4.1-s1319998239~natty) but it is not going to be installed >                              Depends: ros-electric-visualization (= > 1.6.5-s1319868344~natty) but it is not going to be installed >                              Depends: ros-electric-vision-opencv (= > 1.6.5-s1319612754~natty) but it is not going to be installed >                              Depends: ros-electric-perception-pcl (= > 1.0.1-s1319613326~natty) but it is not going to be installed >                              Depends: ros-electric-geometry-experimental (= > 0.2.2-s1319626527~natty) but it is not going to be installed >                              Depends: ros-electric-image-pipeline (= > 1.6.1-s1319613129~natty) but it is not going to be installed >                              Depends: ros-electric-simulator-gazebo (= > 1.4.6-s1319880555~natty) but it is not going to be installed >                              Depends: ros-electric-simulator-stage (= > 1.4.0-s1320004508~natty) but it is not going to be installed >                              Depends: ros-electric-geometry-visualization (= > 0.1.1-s1319646118~natty) but it is not going to be installed >                              Depends: ros-electric-common-tutorials (= > 0.1.2-s1319646410~natty) but it is not going to be installed >                              Depends: ros-electric-image-transport-plugins > (= 1.4.2-s1319612847~natty) but it is not going to be installed >                              Depends: ros-electric-robot-model (= > 1.6.2-s1319867812~natty) but it is not going to be installed >                              Depends: ros-electric-visualization-tutorials > (= 0.2.3-s1319893741~natty) but it is not going to be installed >                              Depends: ros-electric-geometry (= > 1.6.1-s1319612027~natty) but it is not going to be installed >                              Depends: ros-electric-laser-pipeline (= > 1.2.0-s1319616933~natty) but it is not going to be installed >                              Depends: ros-electric-navigation (= > 1.6.5-s1319667472~natty) but it is not going to be installed > E: Broken packages > " > What's wrong???? > > > Best Regards > Pei > > > > > > > > > > > > > -- > > Pei JIA > Email: jp4work@gmail.com > cell:    +1 604-362-5816 > Welcome to Vision Open > http://www.visionopen.com > > _______________________________________________ > ros-users mailing list > ros-users@code.ros.org > https://code.ros.org/mailman/listinfo/ros-users > >