warning waited one second for namespaces

edit

While working on gazebo, I tried to launch $ gazebo worlds/gripper.world but came up with the following error:

 gazebo worlds/gripper.world
Gazebo multi-robot simulator, version 2.2.6
Copyright (C) 2012-2014 Open Source Robotics found <br>ation.
Released under the Apache 2 License.
http://gazebosim.org

Gazebo multi-robot simulator, version 2.2.6
Copyright (C) 2012-2014 Open Source Robotics found <br>ation.
Released under the Apache 2 License.
http://gazebosim.org

Msg Waiting for masterMsg Waiting for master

Msg Connected to gazebo master @ http://127.0.0.1:11345
Msg Connected to gazebo master @ http://127.0.0.1:11345
Msg Publicized address: 172.24.128.240
Msg Publicized address: 172.24.128.240
Warning [ModelDatabase.cc:334] Getting models from[http://gazebosim.org/models/]. This may take a few seconds.
Warning [gazebo.cc:215] Waited 1seconds for namespaces <br>.
Warning [gazebo.cc:215] Waited 1seconds for namespaces <br>.
Warning [gazebo.cc:215] Waited 1seconds for namespaces <br>.
Warning [gazebo.cc:215] Waited 1seconds for namespaces <br>.
Warning [gazebo.cc:215] Waited 1seconds for namespaces <br>.
Warning [gazebo.cc:215] Waited 1seconds for namespaces <br>.
Warning [gazebo.cc:215] Waited 1seconds for namespaces <br>.
Warning [gazebo.cc:215] Waited 1seconds for namespaces <br>.
Warning [gazebo.cc:215] Waited 1seconds for namespaces <br>.
Warning [gazebo.cc:215] Waited 1seconds for namespaces <br>.
Error [gazebo.cc:220] Waited 11 seconds for namespaces Giving up. <br>
Error [Node.cc:90] No namespace found <br>
Error [Node.cc:90] No namespace found <br>
Error [Node.cc:90] No namespace found <br>
Error [Node.cc:90] No namespace found <br>
Error [Node.cc:90] No namespace found <br>
Error [Node.cc:90] No namespace found <br>
Error [Node.cc:90] No namespace found <br>
Error [Node.cc:90] No namespace found <br>
Error [Node.cc:90] No namespace found <br>
Error [Node.cc:90] No namespace found <br>
Error [Node.cc:90] No namespace found <br>

I am not sure as to how to resolve it, I first had 2.2.2 installed, then i updated to 2.2.6 but the problem still persisted