Hi Ugo, can you show how the service message is filled out and the shadow urdf? thanks, John On May 6, 2011 9:43 AM, "Ugo Cupcic" wrote: > Hi, > > I'm trying to use the /gazebo/set_model_configuration service to set a > starting pause for my arm (as suggested here: > http://answers.ros.org/question/857/set-revolute-joint-start-angle). > > I'm getting the following error: > gazebo_model canonical body[world] is not the root link[shadowarm_base]! > > When I spawn my model, I'm specifying world as the reference_frame though. > (rosrun gazebo spawn_model -urdf -param robot_description -model > arm_and_hand -reference_frame world) > > Any help greatly appreciated. > > Cheers, > > Ugo > > -- > Ugo Cupcic | Shadow Robot Company | ugo@shadowrobot.com > Software Engineer | 251 Liverpool Road | > need a Hand? | London N1 1LX | +44 20 7700 2487 > http://www.shadowrobot.com/hand/ @shadowrobot