Could not open Gazebo using gazebo_ros

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I have followed this TUTORIAL to install gazebo_ros_pkgs

I opted to install using the Pre-Built Debians

When I try to open the gazebo using

rosrun gazebo_ros gazebo

The gazebo keeps loading and just freezes:

I checked the topic using rostopic list and there was no other topics than /rosout and /rosout_agg which are from the ros master that I opened using roscore.

Please help!!!

I use Ubuntu Xenial, ROS kinetic, gazebo 7. The standalone gazebo , which was installed when I installed the ros, works fine. I installed the full desktop version of ros.

After installing the gazebo_ros_pkgs, I tried to run the command once again , here's the output:

sudo apt-get install ros-kinetic-gazebo-ros-pkgs ros-kinetic-gazebo-ros-control
[sudo] password for mon: 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
ros-kinetic-gazebo-ros-control is already the newest version (2.5.13-0xenial-20170805-130400-0800).
ros-kinetic-gazebo-ros-pkgs is already the newest version (2.5.13-0xenial-20170727-212737-0800).
ros-kinetic-gazebo-ros-pkgs set to manually installed.
0 upgraded, 0 newly installed, 0 to remove and 89 not upgraded.

I notice that it says: "ros-kinetic-gazebo-ros-pkgs set to manually installed" I wonder if this is the problem????

EDIT: After reading this thread , I realize that 'manually installed' is not the problem.

I checked on my gazebo_ros_pkgs folder. Here's the output

mon@mon:/opt/ros/kinetic/share/gazebo_ros_pkgs$ ls
package.xml

Please help to solve this.