Cannot launch most of the virtual environments from gazebo_world

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I was trying to run a simulation in a virtual environment on gazebo. Therefore I launch the virtual environment in gazebo_worlds such as office_world.launch. The following error message occurred:

Msg Waiting for master[ INFO] [1345626416.332008069]: waitForService: Service [/gazebo/set_physics_properties] has not been advertised, waiting...

Msg Connected to gazebo master @ http://localhost:11345
[ INFO] [1345626419.675247663, 0.107000000]: waitForService: Service [/gazebo/set_physics_properties] is now available.
[ INFO] [1345626419.713744662, 2.769000000]: Starting to spin physics dynamic reconfigure node...

and gazebo window didn't occur

and I tried to launch empty_world.launch, it succeeded. Other launch file such as simple_office2.launch, simple_world.launch, wg_world.launch... failed, too.

How can I solve this problem or is there any other launch file that provides a complete virtual environment for simulation?

BTW I run Fuerte on Ubuntu 12.04

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When I tried to launch simple_office2.launch, I got the following error:

Segmentation fault (core dumped)
[gazebo-2] process has died [pid 6666, exit code 139, cmd /opt/ros/fuerte/stacks/simulator_gazebo/gazebo/scripts/gazebo /opt/ros/fuerte/stacks/simulator_gazebo/gazebo_worlds/worlds/simple_office2.world __name:=gazebo __log:=/home/albert/.ros/log/99159028-edc2-11e1-b88b-5404a6dc3a5e/gazebo-2.log].
log file: /home/albert/.ros/log/99159028-edc2-11e1-b88b-5404a6dc3a5e/gazebo-2*.log

I've added a new line in the launch file

<node name="gazebo_gui" pkg="gazebo" type="gui" respawn="false" output="screen"/>