roslaunch gazebo_ros symbol lookup error

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Hi I am setting up gazebo on Ubuntu 12.04 with ROS Hydro. Installation is done using debs. I have following output on lauching willowgarage world.

/opt/ros/hydro/share/gazebo_ros/launch$ roslaunch willowgarage_world.launch 
... logging to /home/nitin/.ros/log/0bc030d2-8882-11e3-81c2-00216a476f4e/roslaunch-nitin-laptop-13134.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 <a href="http://nitin-laptop:36958/">http://nitin-laptop:36958/</a>

SUMMARY
========

PARAMETERS
 * /rosdistro
 * /rosversion
 * /use_sim_time

NODES
  /
    gazebo (gazebo_ros/gzserver)
    gazebo_gui (gazebo_ros/gzclient)

auto-starting new master
process[master]: started with pid [13148]
ROS_MASTER_URI=http://localhost:11311

setting /run_id to 0bc030d2-8882-11e3-81c2-00216a476f4e
process[rosout-1]: started with pid [13161]
started core service [/rosout]
process[gazebo-2]: started with pid [13175]
process[gazebo_gui-3]: started with pid [13180]
Gazebo multi-robot simulator, version 1.9.3
Copyright (C) 2013 Open Source Robotics Foundation.
Released under the Apache 2 License.
<a href="http://gazebosim.org">http://gazebosim.org</a>

Gazebo multi-robot simulator, version 1.9.3
Copyright (C) 2013 Open Source Robotics Foundation.
Released under the Apache 2 License.
<a href="http://gazebosim.org">http://gazebosim.org</a>

Msg Waiting for master.gzserver: symbol lookup error: /opt/ros/hydro/lib/libgazebo_ros_api_plugin.so: undefined symbol: _ZN3ros7console5printEPNS0_10FilterBaseEPvNS0_6levels5LevelEPKciS7_S7_z
[gazebo-2] process has died [pid 13175, exit code 127, cmd /opt/ros/hydro/lib/gazebo_ros/gzserver worlds/willowgarage.world __name:=gazebo __log:=/home/nitin/.ros/log/0bc030d2-8882-11e3-81c2-00216a476f4e/gazebo-2.log].
log file: /home/nitin/.ros/log/0bc030d2-8882-11e3-81c2-00216a476f4e/gazebo-2*.log
............

If I start gzserver independently, then gazebo client GUI do popup but with empty world. No models are shown. Any idea how this can be sorted out?

rgds nitin