rviz plugin after completing the moveit setup assistant fails

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Hi,

I completed the 'getting started' tutorial of the moveit_setup_assistant and was able to generate the configuration files of the pr2 robot, but also of my own 6-axis robot. When i try to open either of the models in rviz i with following command:

roslaunch pr2_moveit_config demo.launch

I get the following error:

  while processing /opt/ros/hydro/share/pr2_moveit_config/launch/moveit_rviz.launch:
Invalid <node> tag: node name cannot contain a namespace. 

Node xml is <node args="$(arg command_args)" launch-prefix="$(arg launch_prefix)" name="$(anon rviz)" output="screen" pkg="rviz" respawn="false" type="rviz">
    <rosparam command="load" file="$(find pr2_moveit_config)/config/kinematics.yaml"/>
  </node>

Is there something i have to change in this launch file?