leddar sensor connecting process always died

edit

I had compile the Leddar ROS package successfully, after that I running the command roslaunch leddar leddar.launch and it will show me :

... logging to /home/leddar/.ros/log/04b08b28-fb0f-11e5-8fba-c03fd56476ff/roslaunch-leddar-desktop-29633.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://leddar-desktop:36972/

SUMMARY
========

PARAMETERS
 * /leddar/fov: 45.0
 * /leddar/frame: leddar
 * /leddar/range: 50.0
 * /leddar/serial: 
 * /rosdistro: indigo
 * /rosversion: 1.11.16

NODES
  /
    leddar (leddar/leddar)

ROS_MASTER_URI=http://localhost:11311

core service [/rosout] found
process[leddar-1]: started with pid [29651]
[ INFO] [1459850056.151109908]: Connected to default
[ INFO] [1459850056.165976987]: Reconfiguring...
[ INFO] [1459850056.175064564]: Streaming...
[leddar-1] process has died [pid 29651, exit code -7, cmd /home/leddar/catkin_ws/devel/lib/leddar/leddar __name:=leddar __log:=/home/leddar/.ros/log/04b08b28-fb0f-11e5-8fba-c03fd56476ff/leddar-1.log].
log file: /home/leddar/.ros/log/04b08b28-fb0f-11e5-8fba-c03fd56476ff/leddar-1*.log
[leddar-1] restarting process
process[leddar-1]: started with pid [29697]
[ INFO] [1459850070.122849882]: Connected to default
[ INFO] [1459850070.138432672]: Reconfiguring...
[ INFO] [1459850070.145432446]: Streaming...
[leddar-1] process has died [pid 29697, exit code -7, cmd /home/leddar/catkin_ws/devel/lib/leddar/leddar __name:=leddar __log:=/home/leddar/.ros/log/04b08b28-fb0f-11e5-8fba-c03fd56476ff/leddar-1.log].
log file: /home/leddar/.ros/log/04b08b28-fb0f-11e5-8fba-c03fd56476ff/leddar-1*.log

the leddar ros package I was git clone from : https://github.com/mcgill-robotics/ro...

anyone know how to solve it? Thank you!