Roslaunch and <node> type

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Hello all,

I am trying to augment a roslaunch code from my robot's manufacturer. They have sent me this launch file:

<launch> <group ns="drrobot_player1">
<rosparam file="$(find drrobot_jaguar4x4_player)/drrobotplayer_I90_Motion.yaml" command="load"/>
<node pkg="drrobot_jaguar4x4_player" name="drrobot_player" type="drrobot_player" output="screen"/>
<node pkg="drrobot_jaguar4x4_player" name="drrobotMsgTester" type="drrobotMsgTester" output="screen"/>   </group> </launch>

Essentially one of the nodes publishes the motor info (drrobot_player) and the other node subscribes and output the info (drrobotMsgTester)

I would like to make my own node where I can publish other information, so I made a new .cpp file, added it to my CMakeLists.txt and successfully made with rosmake. Now when I change the launch file to use my node instead:

<launch> <group ns="drrobot_player1">
<rosparam file="$(find drrobot_jaguar4x4_player)/drrobotplayer_I90_Motion.yaml" command="load"/>
<node pkg="drrobot_jaguar4x4_player" name="H20_player" type="H20_player" output="screen"/>
<node pkg="drrobot_jaguar4x4_player" name="drrobotMsgTester" type="drrobotMsgTester" output="screen"/>   </group> </launch>

I get an error:

ERROR: cannot launch node of type [drrobot_jaguar4x4_player/H20_player]: can't locate node [H20_player] in package [drrobot_jaguar4x4_player]

Does anyone know what I am doing wrong? The manufacturers code also has a folder called drrobot_player so I think it has something to do with this. Here is a picture of the folder structure in the src folder of the ros package.

Many thanks in advance to anyone who can help me figure this out :)

Kind Regards, Martin