turtlebot_simulator (no kinect data)

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Hi,

when I run turtlebot simulation, there is no simulated Kinect. I'm sure that before some time it was working.

I'm using this command to run simulation:

roslaunch turtlebot_gazebo turtlebot_empty_world.launch

/clock
/cmd_vel
/diagnostics
/diagnostics_agg
/gazebo/link_states
/gazebo/model_states
/gazebo/parameter_descriptions
/gazebo/parameter_updates
/gazebo/paused
/gazebo/set_link_state
/gazebo/set_model_state
/imu/data
/joint_states
/odom
/robot_pose_ekf/odom
/rosout
/rosout_agg
/scan
/tf
/turtlebot_node/sensor_state

During start-up there is just this info (from pointcloud_throttle, kinect_laser and kinect_laser_narrow nodes):

waitForService: Service [/openni_manager/load_nodelet] has not been advertised, waiting...

Thanks for any advice...