hi everybody i have problem with skeleton marker when i execute that code roslaunch skeletonmarkers markersfrom_tf.launch i get this error

while processing /opt/ros/fuerte/stacks/opennicamera/launch/openninode.launch: Invalid roslaunch XML syntax: [Errno 2] No such file or directory: u'/opt/ros/fuerte/stacks/opennicamera/launch/openninode.launch'

i have ubuntu 12.04 with fuerte i had build skeletonmarkers and pitracker with rosmake without any mistake thank you for your attention