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

cell: +1 604-362-5816