In attempts to relocate the package to another directory, I have created a
new rospackage and copied over the state_publisher.cpp file, my urdf file
called model.xml, my launch file and the meshes folder that holds stl files.
Launch file has been edited to reflect the path change. Copying over these
files have created an error when a launch my launch file. It cannot locate
the node of the type "robot state publisher". The error is copied below:

yglee@yglee-laptop:~/cturtle_usc/stacks/interaction-ros-pkg/sandbox/person_urdf2$
roslaunch person_urdf2 launch_file.launch
... logging to
/home/yglee/.ros/log/91d211cc-9385-11df-b772-00236c960005/roslaunch-yglee-laptop-30443.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://yglee-laptop:35400/

SUMMARY
========

PARAMETERS
 * /robot_description

NODES
  /
    robot_state_publisher (robot_state_publisher/state_publisher)
    state_publisher (person_urdf2/state_publisher)

starting new master (master configured for auto start)
process[master]: started with pid [30458]
ROS_MASTER_URI=http://yglee-laptop:11311/

setting /run_id to 91d211cc-9385-11df-b772-00236c960005
process[rosout-1]: started with pid [30471]
started core service [/rosout]
ERROR: cannot launch node of type [robot_state_publisher/state_publisher]:
Cannot locate node of type [state_publisher] in package
[robot_state_publisher]
process[state_publisher-3]: started with pid [30483]
^C[state_publisher-3] killing on exit
[rosout-1] killing on exit
[master] killing on exit
exiting...
shutting down processing monitor...
... shutting down processing monitor complete
done

Any insight into this problem will be much appreciated.

Grace L.