cannot launch node.. but the node is correctly built! [closed]

edit

Hello,

I am trying to run a simple test (on Stage); however, I am not able to roslaunch my c++ code.

My node test_navigation is correctly built: [100%] Built target test_navigation. My CMakeLists.txt is as follows:

cmake_minimum_required(VERSION 2.8.3)
project(test_navigation)

find_package(catkin REQUIRED COMPONENTS
  actionlib
  actionlib_msgs
  move_base
  move_base_msgs
  roscpp
  rospy
  std_msgs
)
include_directories(
  ${catkin_INCLUDE_DIRS}
  ${python_INCLUDE_DIRS}
)
catkin_package(
    DEPENDS actionlib actionlib_msgs move_base move_base_msgs roscpp rospy std_msgs
)
add_executable(test_navigation src/my_math.cpp src/robot_pose.cpp src/robot_manager.cpp src/monitor.cpp src/test_navigation.cpp)
target_link_libraries(test_navigation boost_program_options ${catkin_LIBRARIES})

However, by using

<node name="test_navigation" pkg="test_navigation" type="test_navigation" output="screen" args="--init-pose-x $(arg init_pose_x) --init-pose-y $(arg init_pose_y) --init-pose-th $(arg init_pose_th) --goal-pose-x $(arg goal_pose_x) --goal-pose-y $(arg goal_pose_y) --goal-pose-th $(arg goal_pose_th) --instance-id $(arg instance_id)"/>

in my launch file and calling roslaunch the result I obtain is

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

I should say that I am a complete newbie to catkin and definitely not an expert in rosbuild either.

Does anybody have a hint?

EDIT: this is the output of rospack profile:

marco@marco-PC ~/catkin_ws $ rospack profile
Full tree crawl took 0.013673 seconds.
Directories marked with (*) contain no manifest.  You may
want to delete these directories.
To get just of list of directories without manifests,
re-run the profile with --zombie-only
-------------------------------------------------------------
0.011649   /opt/ros/indigo/share
0.000842   /home/marco/catkin_ws/install/share
0.000016 * /opt/ros/indigo/share/doc
0.000002 * /opt/ros/indigo/share/doc/liborocos-kdl