RViz Crashing (Ogre or MoveIt!)

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Hi

I am using ROS-kinetic on Ubunutu 16.04. I tried to build MoveIt! by source installation through this link. I also have also installed KUKA IIWA from this link . When i run the command:

roslaunch iiwa_moveit demo.launch

I get following error:

rviz: /build/ogre-1.9-mqY1wq/ogre-1.9-1.9.0+dfsg1/OgreMain/src/OgreSceneManager.cpp:830: virtual Ogre::SceneNode* Ogre::SceneManager::createSceneNode(): Assertion `mSceneNodes.find(sn->getName()) == mSceneNodes.end()' failed.

[iiwa/rviz_Pulkit_2784_189040138593868182-5] process has died [pid 2863, exit code -6, cmd /opt/ros/kinetic/lib/rviz/rviz -d /home/bhoot/effort_ws/src/iiwa_stack/iiwa_moveit/launch/moveit.rviz robot_description:=/iiwa/robot_description /move_group/fake_controller_joint_states:=/iiwa/move_group/fake_controller_joint_states /get_planning_scene:=/iiwa/get_planning_scene __name:=rviz_Pulkit_2784_189040138593868182 __log:=/home/bhoot/.ros/log/f225e654-17af-11e9-8e26-a08cfdeabd87/iiwa-rviz_Pulkit_2784_189040138593868182-5.log]. log file: /home/bhoot/.ros/log/f225e654-17af-11e9-8e26-a08cfdeabd87/iiwa-rviz_Pulkit_2784_189040138593868182-5*.log

and RViz Crashes. I tried to look for a solution and referred to this ros-answer also, but problem was not solved.

Can someone help ??