can't locate node [turtle_teleop_joy] in package [learning_joy]

edit

Using Hydro on Precise. Following the tutorials on joystick operation here and here. The joystick works, roscore is running, joy_node is running, when I do rostopic echo joy I see the vectors change as I expect when the joystick controls are moved. When I run roslaunch learning_joy turtle_joy.launch however, the joystick still works, topic echo shows still sending, but no movement of the turtle.

I'm still on the steep part of the learning curve so I could be wrong, but might this be a path problem? I've changed the launch file as suggested here (joy to joy_node) and also changed the last line from turtle_teleop to learning_joy (missed that bit on the tutorial) but still not getting it right. here's my screenshot:

roslaunch learning_joy turtle_joy.launch ... logging to /home/richard/.ros/log/68d0ca94-ef06-11e3-912a-00215c98e435/roslaunch-inga-7554.log
Checking log directory for disk usage. This may take awhile. 
Press Ctrl-C to interrupt 
Done checking log file disk usage. Usage is <1GB.

    started roslaunch server http://inga:32850/

    SUMMARY
    PARAMETERS * /axis_angular * /axis_linear * /rosdistro * /rosversion * /scale_angular * /scale_linear * /turtle_joy/deadzone * /turtle_joy/dev

    NODES / sim (turtlesim/turtlesim_node) teleop (learning_joy/turtle_teleop_joy) turtle_joy (joy/joy_node)

    ROS_MASTER_URI=http://localhost:11311

    core service [/rosout] found process[sim-1]: started with pid [7572] process[turtle_joy-2]: started with pid [7596] ERROR: cannot launch node of type [learning_joy/turtle_teleop_joy]: can't locate node [turtle_teleop_joy] in package [learning_joy]