I have installed this driver in this web http://wiki.ros.org/rotoscan_node But when I

roslaunch rotoscannode laserscannertcp.launch

it output this error ERROR: cannot launch node of type [rotoscannode/rotoscannode]: can't locate node [rotoscannode] in package [rotoscannode]

it seems that their no this node in the rotoscan_node , how can i success use the leuze laser scan?

please give me a introduction how to use it well ! thanks !