Problem roslaunch falkor_ardrone track.launch

[harke]

Hi,
When I roslaunch falkor_ardrone track.launch I get the following error. Any idea? Thx.

[ardrone_follow-4] process has died [pid 10688, exit code 1, cmd /home/aga/fuerte_workspace/falkor_ardrone/nodes/ardrone_follow.py __name:=ardrone_follow __log:=/home/meca/.ros/log/c8ca18f0-f6d3-11e2-8be6-c48508669a31/ardrone_follow-4.log].
log file: /home/aga/.ros/log/c8ca18f0-f6d3-11e2-8be6-c48508669a31/ardrone_follow-4*.log
[ERROR] [1374940033.855583284]: Unable to open camera calibration file [/home/aga/.ros/camera_info/ardrone_front.yaml]
[ERROR] [1374940033.856401766]: Unable to open camera calibration file [/home/aga/.ros/camera_info/ardrone_bottom.yaml]