errors in stacks in ROS

edit

Hi, I'm not familiar at ROS errors,, firstly , i installed Roboearth Stack using these four steps :

http://www.ros.org/wiki/roboearth

the result of that : I have the roboearth stack in Home/ros

i made a connection between this and ROS by opening bashrc file and typed "export ROS_PACKAGE_PATH=/opt/ros/fuerte/share:/opt/ros/fuerte/stacks:/home/ros"

and saved

i begin to run re_comm package in roboearth stack but itthrow an error

salma@salma-G31M-S2L:~$ rosrun re_comm run
[rospack] Error: stack/package re_comm not found

i don't know why ??? re_comm not in /opt/ros/fuerte/stacks but in /home/ros/roboearth

why not found ??

and this is the result of rosmake roboearth now

salma@salma-G31M-S2L:~$ rosmake roboearth
[ rosmake ] rosmake starting...                                                 
[ rosmake ] Packages requested are: ['roboearth']                               
[ rosmake ] Logging to directory /home/salma/.ros/rosmake/rosmake_output-20121111-201259
[ rosmake ] Expanded args ['roboearth'] to:
[]                                  
[ rosmake ] WARNING: The following args could not be parsed as stacks or packages: ['roboearth']
[ rosmake ] ERROR: No arguments could be parsed into valid package or stack names.