Hello, We have UBUNTU 8.04 distribution.we have installed latest ROS for 8.04 When we tried to execute roscore, we came across below error.. >>roscore ... logging to /home/rootx/.ros/log/fb915e04-38a1-11df-b459-002622c82719/roslaunch-rootx-la ptop-19613.log started roslaunch server http://rootx-laptop:37101/ SUMMARY ======== NODES starting new master (master configured for auto start) process[master]: started with pid [19631] ROS_MASTER_URI=http://rootx-laptop:11311/ setting /run_id to fb915e04-38a1-11df-b459-002622c82719 /opt/ros/boxturtle/ros/core/rosout/rosout: error while loading shared libraries: liblog4cxx.so.10: cannot open shared object file: No such file or directory failed to start local process: /opt/ros/boxturtle/ros/core/rosout/rosout __name:=rosout __log:=/home/rootx/.ros/log/fb915e04-38a1-11df-b459-002622c82719/rosout-1.lo g local launch of rosout/rosout failed failed to start core service [/rosout] [rosout-1] killing on exit [master] killing on exit exiting... rootx@rootx-laptop:~$ Can someone help us to resolve this? Thanks and Regards, Prasad Dixit