succesfully running gazebo but cannot run simulator_gazebo

edit

hey guys take a look at the following code:

successful run:

root@ubuntu:/opt/ros/groovy/stacks# gazebo
Gazebo multi-robot simulator, version 1.6.1
Copyright (C) 2013 Open Source Robotics Foundation.
Released under the Apache 2 License.

gazebosim.org

Msg Waiting for master.Gazebo multi-robot simulator, version 1.6.1
Copyright (C) 2013 Open Source Robotics Foundation.
Released under the Apache 2 License.
gazebosim.org

Warning [parser.cc:361] Converting a deprecated SDF source[/usr/share/gazebo-1.6/worlds/empty.world].
Warning [Converter.cc:61]   Version[1.3] to Version[1.4]
  Please use the gzsdf tool to update your SDF files.
    $ gzsdf convert [sdf_file]
Warning [parser.cc:361] Converting a deprecated SDF source[/home/konet/.gazebo/models/sun/model.sdf].
Set SDF value
Warning [Converter.cc:61]   Version[1.2] to Version[1.4]
  Please use the gzsdf tool to update your SDF files.
    $ gzsdf convert [sdf_file]
Warning [parser.cc:361] Converting a deprecated SDF source[/home/konet/.gazebo/models/ground_plane/model.sdf].
Set SDF value
Warning [Converter.cc:61]   Version[1.2] to Version[1.4]
  Please use the gzsdf tool to update your SDF files.
    $ gzsdf convert [sdf_file]
Msg Waiting for master
Msg Connected to gazebo master @ //127.0.0.1:11345
Msg Publicized address: 192.168.0.19

Msg Connected to gazebo master @ //127.0.0.1:11345
Msg Publicized address: 192.168.0.19

non-successful run:

root@ubuntu:/opt/ros/groovy/stacks# roslaunch gazebo_worlds empty_world.launch
... logging to /home/konet/.ros/log/6fa89b8e-a327-11e2-909e-68a3c42c6822/roslaunch-ubuntu-3071.log
Checking log directory for disk usage. This may take awhile.
Press Ctrl-C to interrupt
Done checking log file disk usage. Usage is <1GB.

started roslaunch server //ubuntu:41494/

SUMMARY
========

PARAMETERS
 * /rosdistro
 * /rosversion
 * /use_sim_time

NODES
  /
    gazebo (gazebo/gazebo)
    gazebo_gui (gazebo/gui)

auto-starting new master
process[master]: started with pid [3085]
ROS_MASTER_URI=//localhost:11311

setting /run_id to 6fa89b8e-a327-11e2-909e-68a3c42c6822
process[rosout-1]: started with pid [3098]
started core service [/rosout]
process[gazebo-2]: started with pid [3112]
process[gazebo_gui-3]: started with pid [3121]
Gazebo multi-robot simulator, version 1.3.0
Copyright (C) 2012 Nate Koenig, John Hsu, and contributors.
Released under the Apache 2 License.
//gazebosim.org

Gazebo multi-robot simulator, version 1.3.0
Copyright (C) 2012 Nate Koenig, John Hsu, and contributors.
Released under the Apache 2 License.
//gazebosim.org

Warning [parser.cc:361] Converting a deprecated SDF source[/opt/ros/groovy/stacks/simulator_gazebo/gazebo_worlds/worlds/empty.world].
Set SDF value
  Version[1.2] to Version[1.3]
  Please use the gzsdf tool to update your SDF files.
    $ gzsdf convert [sdf_file]
Msg Waiting for master
Msg Connected to gazebo master @ //127.0.0.1:11345
Msg Publicized address: 192.168.0.19
[ INFO] [1365740057.248876597]: waitForService: Service [/gazebo/set_physics_properties] has not been advertised, waiting...
Error [Rendering.cc:37] Failed to load the Rendering engine subsystem
unable to find OpenGL rendering system. OGRE is probably installed incorrectly. Double check the OGRE cmake output, and make sure OpenGL is enabled.
Msg Waiting for master
Msg Connected to gazebo master @ //127.0.0.1:11345
Msg ...