what does DepthSense::TimeoutException mean?

edit

I am trying to run Creative 3D senz camera(2 of them) using softkinectic drivers. Doing a roslaunch roslaunch softkinetic_camera softkinetic_cameras.launch gives me the following error:

[ INFO] [1488258988.534546610]: Number of Devices found: 2
TimeoutException
terminate called after throwing an instance of 'DepthSense::TimeoutException'
  what():  timeout
[ INFO] [1488258988.583475163]: Number of Devices found: 2
[softkinetic_left-1] process has died [pid 5865, exit code -6, cmd /home/lerrel/ros_ws/devel/lib/softkinetic_camera/softkinetic_bringup_node 0 __name:=softkinetic_left __log:=/home/lerrel/.ros/log/5c3c1bf6-fc70-11e6-8862-b8ca3a804de3/softkinetic_left-1.log].
log file: /home/lerrel/.ros/log/5c3c1bf6-fc70-11e6-8862-b8ca3a804de3/softkinetic_left-1*.log
TimeoutException
terminate called after throwing an instance of 'DepthSense::TimeoutException'
  what():  timeout

What do I about this? I tried shutting down the process, but the cameras won't turn off.