Kobuki auto-docking error

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Hi,

I am currently working with a Turtlebot 2 with a Kobuki base, I tried to follow the tutorial http://ros.org/wiki/kobuki/Tutorials/TestingAutomaticDocking

I can start the Kobuki node with no error, but as soon as I start the auto-docking nodelet I get this error :

Warning: class_loader::class_loader_private: SEVERE WARNING!!! A namespace collision has occured with plugin factory for class (null). New factory will OVERWRITE existing one. This situation occurs when libraries containing plugins are directly linked against an executable (the one running right now generating this message). Please separate plugins out into their own library or just dont link against the library and use either class_loader::ClassLoader/MultiLibraryClassLoader to open.
         at line 180 in /opt/ros/groovy/include/class_loader/class_loader_core.h
/opt/ros/groovy/lib/nodelet/nodelet: symbol lookup error: /opt/ros/groovy/lib/libkobuki_auto_docking_ros.so: undefined symbol: _ZN9actionlib15GoalIDGeneratorC1Ev
[kobuki-2] process has died [pid 31630, exit code 127, cmd /opt/ros/groovy/lib/nodelet/nodelet manager __name:=kobuki __log:=/home/caroline/.ros/log/3fd781dc-b72b-11e2-a8e9-002354f2e9ef/kobuki-2.log].
log file: /home/caroline/.ros/log/3fd781dc-b72b-11e2-a8e9-002354f2e9ef/kobuki-2*.log

Did someone experience the same problem ? Or does someone have some idea why I get that ?

Caroline