gmapping frequent crashing

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Hi there, I am currently trying to launch gmapping for a mobile wheechair that I have built. I have made a launch file for all the configurations of the robot. All the subscribed topics of the gmapping node are being published with this launch file. Unfortunately my computer crashes as soon as a I launch gmapping when running the following line of code. It also crashes when I tried running the launch file.

rosrun gmapping slam_gmapping scan:=scan

How should I go about debugging this issue? My computer is an Acer TravelMate P253-M running Ubunut 14.04 with ROS Indigo.

robot_config.launch

<launch>
  <node pkg="tf" type="static_transform_publisher" name="base_to_kinect_broadcaster" args="-0.17 0.04 0.1975 0 0 0 \/base_link \/camera_link 100" />

  <!--we use the kinect sensor as a fake laser scanner /-->
  <include file="$(find my_personal_robotic_companion)/launch/kinect_laser.launch" />

  <!--serial communication between arduino and pc via usb /-->
  <node name="arduino_serial_node" pkg="rosserial_python" type="serial_node.py" output="screen">
    <param name="port" value="/dev/ttyACM0" />
    <param name="baud" value="57600" />
  </node>

<node name="base_controller_node" pkg="my_personal_robotic_companion" type="base_controller">

</node>
</launch>

gmapping.launch

<launch>
  <node pkg="gmapping" type="slam_gmapping" name="slam_gmapping" output="screen">
    <param name="base_frame" value="base_link"/>
    <param name="odom_frame" value="odom"/>
    <param name="map_update_interval" value="5.0"/>
    <param name="maxUrange" value="6.0"/>
    <param name="maxRange" value="8.0"/>
    <param name="sigma" value="0.05"/>
    <param name="kernelSize" value="1"/>
    <param name="lstep" value="0.05"/>
    <param name="astep" value="0.05"/>
    <param name="iterations" value="5"/>
    <param name="lsigma" value="0.075"/>
    <param name="ogain" value="3.0"/>
    <param name="lskip" value="0"/>
    <param name="minimumScore" value="100"/>
    <param name="srr" value="0.01"/>
    <param name="srt" value="0.02"/>
    <param name="str" value="0.01"/>
    <param name="stt" value="0.02"/>
    <param name="linearUpdate" value="0.5"/>
    <param name="angularUpdate" value="0.436"/>
    <param name="temporalUpdate" value="-1.0"/>
    <param name="resampleThreshold" value="0.5"/>
    <param name="particles" value="80"/>

    <param name="xmin" value="-1.0"/>
    <param name="ymin" value="-1.0"/>
    <param name="xmax" value="1.0"/>
    <param name="ymax" value="1.0"/>

    <param name="delta" value="0.05"/>
    <param name="llsamplerange" value="0.01"/>
    <param name="llsamplestep" value="0.01"/>
    <param name="lasamplerange" value="0.005"/>
    <param name="lasamplestep" value="0.005"/>
    <remap from="scan" to="$(arg scan_topic)"/>
  </node>


</launch>