urdf beginner error

edit

Yes i am using the exact same code in the tutorial, i realised i posted just part of the error.

Could not find the 'robot' element in the xml file ERROR: Model Parsing the xml failed

it seems its picking up the file but cant decipher the robot element. If you have any ideas of what i can do, i would be grateful.

<robot name="simple_box">
  <link name="my_box">
    <inertial>
      <origin xyz="2 0 0" /> 
      <mass value="1.0" />
      <inertia  ixx="1.0" ixy="0.0"  ixz="0.0"  iyy="100.0"  iyz="0.0"  izz="1.0" />
    </inertial>
    <visual>
      <origin xyz="2 0 0"/>
      <geometry>
        <box size="1 1 2" />
      </geometry>
    </visual>
    <collision>
      <origin xyz="2 0 0"/>
      <geometry>
        <box size="1 1 2" />
      </geometry>
    </collision>
  </link>
  <gazebo reference="my_box">
    <material>Gazebo/Blue</material>
  </gazebo>
</robot>