velocity smoother does not work... plz help!! [closed]

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hi i try to move my Husky A200 a little bit smoother. Therefor i've installed the yocs_velocity_smoother. But it doesn't start. Nodelet failed to load. I saw that others have nearly the same problems and they only must add a new library through the "CMakeLists.txt" file. But i don't know which library i had to add. My error look like this:

Failed to load nodelet [/velocity_smoother] of type [yocs_velocity_smoother/VelocitySmootherNodelet]: Could not find library corresponding to plugin yocs_velocity_smoother/VelocitySmootherNodelet. Make sure the plugin description XML file has the correct name of the library and that the library actually exists. Service call failed! Service call failed! [velocity_smoother-3] process has died [pid 2531, exit code 255, cmd /opt/ros/groovy/lib/nodelet/nodelet load yocs_velocity_smoother/VelocitySmootherNodelet nodelet_manager velocity_smoother/odometry:=odom velocity_smoother/raw_cmd_vel:=cmd_vel/input velocity_smoother/smooth_cmd_vel:=cmd_vel/output __name:=velocity_smoother __log:=/home/at-labor/.ros/log/02c136b8-da48-11e2-9d90-50e549813a28/velocity_smoother-3.log]. log file: /home/at-labor/.ros/log/02c136b8-da48-11e2-9d90-50e549813a28/velocity_smoother-3*.log

thanks for help