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Hi Nachum,

I don't know if you solved it yet, but here is an answer.

The warning is due to the setting of the controller type. You must specify the package, i.e (if you followed the tutorial):

$ rosparam set my_controller_name/type my_controller_pkg/MyControllerPlugin

Concerning the second error : to load your controller type, use your controller name (it seems you are using your controller namespace). So, to refer to the tutorial, use "my_controller_name" instead of "my_controller_ns".

Concerning the first error : might be many things, but if you follow the previous tutorial right, you should solve it.