I have trouble with Rviz, I'm going trough the MoveIt! pr2 [tutorial](http://docs.ros.org/hydro/api/moveit_ros_visualization/html/doc/tutorial.html) and at **STEP 3: Interact with the PR2**
I try to **interact** with the right arm but the **marker** is blinking so I can't click on it to move the arm around.
I'm using ROS indigo on Ubuntu 14.04. I installed everything as the tutorial requested.
Does anyone seen something like this, what should I do?
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