error while creating a MoveIt package

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Hi,

I'm at the second last step to complete my MoveIt package for an Epson C3-A601S robot. ( READ: http://wiki.ros.org/Industrial/Tutori... Step 3.1) Unfortunately I've stumbled on an error (I am not talking about the naming conventions):

wim@wim-laptop:~/catkin_ws$ roslaunch epsonURDF_gripper_moveit_config  moveit_planning_execution.launch 
WARNING: Package name "epsonURDF_gripper_moveit_config" does not follow the naming conventions. It should start with a lower case letter and only contain lower case letters, digits and underscores.
WARNING: Package name "epsonURDF_gripper" does not follow the naming conventions. It should start with a lower case letter and only contain lower case letters, digits and underscores.
... logging to /home/wim/.ros/log/88aa3c70-eb61-11e5-9540-e0b9a546b0ae/roslaunch-wim-laptop-11096.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.

Traceback (most recent call last):
  File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/__init__.py", line 307, in main
    p.start()
  File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/parent.py", line 268, in start
    self._start_infrastructure()
  File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/parent.py", line 217, in _start_infrastructure
    self._load_config()
  File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/parent.py", line 132, in _load_config
    roslaunch_strs=self.roslaunch_strs, verbose=self.verbose)
  File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/config.py", line 451, in load_config_default
    loader.load(f, config, verbose=verbose)
  File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", line 730, in load
    self._load_launch(launch, ros_config, is_core=core, filename=filename, argv=argv, verbose=verbose)
  File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", line 702, in _load_launch
    self._recurse_load(ros_config, launch.childNodes, self.root_context, None, is_core, verbose)
  File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", line 666, in _recurse_load
    val = self._include_tag(tag, context, ros_config, default_machine, is_core, verbose)
  File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", line 95, in call
    return f(*args, **kwds)
  File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", line 587, in _include_tag
    inc_filename = self.resolve_args(tag.attributes['file'].value, context)
  File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", line 183, in resolve_args
    return substitution_args.resolve_args(args, context=context.resolve_dict, resolve_anon=self.resolve_anon)
  File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/substitution_args.py", line 312, in resolve_args
    resolved = _resolve_args(resolved, context, resolve_anon, commands)
  File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/substitution_args.py", line 325, in _resolve_args
    resolved = commands[command](resolved, a, args, context)
  File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/substitution_args.py", line 141, in _find
    source_path_to_packages=source_path_to_packages)
  File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/substitution_args.py", line 184, in _find_executable
    full_path = _get_executable_path(rp.get_path(args[0]), path)
  File "/usr/lib/python2.7/dist-packages/rospkg/rospack.py", line 200, in get_path
    raise ResourceNotFound(name, ros_paths=self._ros_paths)
ResourceNotFound: [epsonURDF_gripper_moveit_config]
ROS path [0]=/opt/ros/indigo/share/ros
ROS path [1]=/home/wim/catkin_ws/src
ROS path [2]=/opt/ros ...