Error: command stage_ros not implemente

edit

I recently installed stage_ros in my computer but when I try to run using "rosrun stage_ros stageros $(rospack stage_ros)/world/willow-erratic.world" I get the following:

[rospack] Error: command stage_ros not implemented [Loading /world/willow-erratic.world]err: unable to open world file /world/willow-erratic.world : No such file or directory (/tmp/buildd/ros-indigo-stage-4.1.1-4trusty-20150424-0404/libstage/worldfile.cc Load)

I'm not sure if it has something to do with how my environmental variables are set up or if I'm missing something.

EDIT 1

I got stage_ros to work now, I'm able to run thtat command line with no errors, I forgot to add the 'find' key word. This is the output in the command line: $ rosrun stage_ros stageros $(rospack find stage_ros)/world/willow-erratic.world [Loading /opt/ros/indigo/share/stage_ros/world/willow-erratic.world] warn: worldfile /opt/ros/indigo/share/stage_ros/world/willow-erratic.world:21 : property [laser_return] is defined but not used (/tmp/buildd/ros-indigo-stage-4.1.1-4trusty-20150424-0404/libstage/worldfile.cc WarnUnused) Now I'm having some issues installing the controllers, http://wiki.ros.org/stage/Tutorials/I... . I downloaded, extracted and moved the folder to my catkin_ws. I catkin_make it and used the rosmake command but when I run the rosrun command in the tutorial I get the following error:

$ rosrun stage stageros 'rospack find stage_controllers'/world/roomba-wander.world [rospack] Error: package 'stage' not found [rosrun] Couldn't find executable named stageros below