Could not set operational Mode

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I am receiving the following error - Could not set operational Mode, Platform did not respond, Stopping the robot...

What could be the reason?

    aswin@aswinpc:~/wizo_ws$ roslaunch segway_navigation_apps 2d_map_nav_demo.launch map_file:=map
    ... logging to /home/aswin/.ros/log/62947272-d273-11e6-83d0-a4db30d0de0b/roslaunch-aswinpc-18304.log
    Checking log directory for disk usage. This may take awhile.
    Press Ctrl-C to interrupt
    Done checking log file disk usage. Usage is <1GB.

    started roslaunch server http://aswinpc:34605/

    SUMMARY
    ========

    CLEAR PARAMETERS
     * /amcl/
     * /move_base/
     * /segway_move_base/

    PARAMETERS
     * /amcl/base_frame_id: /segway/base_link
     * /amcl/first_map_only: False
     * /amcl/global_frame_id: /map
     * /amcl/gui_publish_rate: -1.0
     * /amcl/initial_cov_aa: 0.06853
     * /amcl/initial_cov_xx: 0.25
     * /amcl/initial_cov_yy: 0.25
     * /amcl/initial_pose_a: 0.0
     * /amcl/initial_pose_x: 0.0
     * /amcl/initial_pose_y: 0.0
     * /amcl/kld_err: 0.05
     * /amcl/kld_z: 0.99
     * /amcl/laser_lambda_short: 0.1
     * /amcl/laser_likelihood_max_dist: 2.0
     * /amcl/laser_max_beams: 60
     * /amcl/laser_max_range: -1.0
     * /amcl/laser_min_range: -1.0
     * /amcl/laser_model_type: likelihood_field

 * /amcl/laser_sigma_hit: 0.2
 * /amcl/laser_z_hit: 0.5
 * /amcl/laser_z_max: 0.05
 * /amcl/laser_z_rand: 0.5
 * /amcl/laser_z_short: 0.05
 * /amcl/max_particles: 2000
 * /amcl/min_particles: 500
 * /amcl/odom_alpha1: 0.15
 * /amcl/odom_alpha2: 0.15
 * /amcl/odom_alpha3: 0.15
 * /amcl/odom_alpha4: 0.15
 * /amcl/odom_alpha5: 0.1
 * /amcl/odom_frame_id: /odom
 * /amcl/odom_model_type: diff
 * /amcl/recovery_alpha_fast: 0.1
 * /amcl/recovery_alpha_slow: 0.001
 * /amcl/resample_interval: 1
 * /amcl/save_pose_rate: 0.5
 * /amcl/transform_tolerance: 0.5
 * /amcl/update_min_a: 0.2
 * /amcl/update_min_d: 0.25
 * /amcl/use_map_topic: False
 * /move_base/DWAPlannerROS/acc_lim_th: 3.2
 * /move_base/DWAPlannerROS/acc_lim_x: 2.5
 * /move_base/DWAPlannerROS/acc_lim_y: 0.0
 * /move_base/DWAPlannerROS/angular_sim_granularity: 0.025
 * /move_base/DWAPlannerROS/controller_frequency: 20.0
 * /move_base/DWAPlannerROS/forward_point_distance: 0.5
 * /move_base/DWAPlannerROS/goal_distance_bias: 24.0
 * /move_base/DWAPlannerROS/latch_xy_goal_tolerance: True
 * /move_base/DWAPlannerROS/max_rot_vel: 1.0
 * /move_base/DWAPlannerROS/max_scaling_factor: 0.2
 * /move_base/DWAPlannerROS/max_trans_vel: 1.0
 * /move_base/DWAPlannerROS/max_vel_x: 0.5
 * /move_base/DWAPlannerROS/max_vel_y: 0.0
 * /move_base/DWAPlannerROS/min_rot_vel: 0.4
 * /move_base/DWAPlannerROS/min_trans_vel: 0.0
 * /move_base/DWAPlannerROS/min_vel_x: 0.0
 * /move_base/DWAPlannerROS/min_vel_y: 0.0
 * /move_base/DWAPlannerROS/occdist_scale: 0.01
 * /move_base/DWAPlannerROS/oscillation_reset_dist: 0.025
 * /move_base/DWAPlannerROS/path_distance_bias: 32.0
 * /move_base/DWAPlannerROS/penalize_negative_x: True
 * /move_base/DWAPlannerROS/prune_plan: True
 * /move_base/DWAPlannerROS/scaling_speed: 0.25
 * /move_base/DWAPlannerROS/sim_granularity: 0.025
 * /move_base/DWAPlannerROS/sim_time: 1.7
 * /move_base/DWAPlannerROS/stop_time_buffer: 0.2
 * /move_base/DWAPlannerROS/vtheta_samples: 10
 * /move_base/DWAPlannerROS/vx_samples: 6
 * /move_base/DWAPlannerROS/xy_goal_tolerance: 0.2
 * /move_base/DWAPlannerROS/yaw_goal_tolerance: 0.1
 * /move_base/GlobalPlanner/cost_factor: 3.0
 * /move_base/GlobalPlanner/lethal_cost: 100
 * /move_base/GlobalPlanner/neutral_cost: 50
 * /move_base/GlobalPlanner/orientation_mode: 1
 * /move_base/GlobalPlanner/publish_potential: False
 * /move_base/TrajectoryPlannerROS/acc_lim_theta: 3.2
 * /move_base/TrajectoryPlannerROS/acc_lim_x: 2.5
 * /move_base/TrajectoryPlannerROS/acc_lim_y: 0.0
 * /move_base/TrajectoryPlannerROS/angular_sim_granularity: 0.025
 * /move_base/TrajectoryPlannerROS/controller_frequency: 20.0
 * /move_base/TrajectoryPlannerROS/dwa: False
 * /move_base/TrajectoryPlannerROS/escape_vel: -0.1
 * /move_base/TrajectoryPlannerROS/gdist_scale: 0.8
 * /move_base/TrajectoryPlannerROS/global_frame_id: /odom
 * /move_base/TrajectoryPlannerROS/heading_lookahead: 0.5
 * /move_base/TrajectoryPlannerROS/heading_scoring: False
 * /move_base/TrajectoryPlannerROS/heading_scoring_timestep: 0.8
 * /move_base/TrajectoryPlannerROS/holonomic_robot: False
 * /move_base/TrajectoryPlannerROS/latch_xy_goal_tolerance: False
 * /move_base/TrajectoryPlannerROS/max_vel_theta: 1.0
 * /move_base/TrajectoryPlannerROS/max_vel_x: 1.0
 * /move_base/TrajectoryPlannerROS/meter_scoring: True
 * /move_base/TrajectoryPlannerROS/min_in_place_vel_theta: 0.4
 * /move_base/TrajectoryPlannerROS/min_vel_theta: -1.0
 * /move_base/TrajectoryPlannerROS/min_vel_x: 0.1
 * /move_base/TrajectoryPlannerROS/occdist_scale: 0.01
 * /move_base/TrajectoryPlannerROS/oscillation_reset_dist: 0.025
 * /move_base/TrajectoryPlannerROS/pdist_scale ...