Got the following error while running "roslaunch turtlebot_gazebo turtlebot_empty_world.launch" [closed]
[gazebo_gui-3] process has died [pid 2313, exit code 139, cmd /opt/ros/hydro/lib/gazebo_ros/gzclient __name:=gazebo_gui __log:=/root/.ros/log/a9439340-51f9-11e3-8a2c-f04da2b4f8ab/gazebo_gui-3.log]. log file: /root/.ros/log/a9439340-51f9-11e3-8a2c-f04da2b4f8ab/gazebo_gui-3*.log
i am using ubuntu 12.04 and ROS-hydro.