I am new to ROS and gazebo. I have been going through the tutorials in http://gazebosim.org/tutorials?tut=build_robot&cat=build_robot. Steps 8, 9 and 10 don't work for me 8. No dots appearing on the screen 9. No new window appearing 10. The joints panel is supposed to come on the right but not. When the right-click, there is an option to apply force/torque. I tried giving a value for force applied at the center of mass but the robot does not move as said in the tutorial.

I have used the exact same model.config and model.sdf as given in the above link. In short my questions are 1. What to do for getting the Force/Position/Velocity panel at the right side of gazebo 2. Why is the robot not moving even after applying the force

Please help.