can't find a dependency

edit

Hi I was building a package from a tutorial link text but when I tried doing rosmake I got an error

Failed to invoke /opt/ros/fuerte/bin/rospack deps-manifests trajectory_control_tutorial
[rospack] Error: package/stack trajectory_control_tutorial depends on non-existent package drc_robot_utils

I was already working with the drc robot and I know I have it on my disk.

what should I write instead? thanks

Nachum

Edit\ Now I tried to run a file that I used before from a package that has that dependency and I am getting this error-

    Traceback (most recent call last):
  File "/home/nachum/joint_control_tutorial/scripts/joint_control12.py", line 3, in <module>
    import roslib; roslib.load_manifest('drc_robot_utils')
  File "/opt/ros/fuerte/lib/python2.7/dist-packages/roslib/launcher.py", line 62, in load_manifest
    sys.path = _generate_python_path(package_name, _rospack) + sys.path
  File "/opt/ros/fuerte/lib/python2.7/dist-packages/roslib/launcher.py", line 93, in _generate_python_path
    m = rospack.get_manifest(pkg)
  File "/usr/local/lib/python2.7/dist-packages/rospkg/rospack.py", line 118, in get_manifest
    return self._load_manifest(name)
  File "/usr/local/lib/python2.7/dist-packages/rospkg/rospack.py", line 157, in _load_manifest
    retval = self._manifests[name] = parse_manifest_file(self.get_path(name), self._manifest_name)
  File "/usr/local/lib/python2.7/dist-packages/rospkg/rospack.py", line 149, in get_path
    raise ResourceNotFound(name, ros_paths=self._ros_paths)
rospkg.common.ResourceNotFound: drc_robot_utils
ROS path [0]=/opt/ros/fuerte/share/ros
ROS path [1]=/home/nachum
ROS path [2]=/home/nachum/ros
ROS path [3]=/home/nachum/ros
ROS path [4]=/opt/ros/fuerte/share
ROS path [5]=/opt/ros/fuerte/stacks

what could of happened?