You have a roslib on your path which has not been built yet.

rosmake roslib

should fix it.

On Thu, Jul 15, 2010 at 1:35 PM, ibwood <ianbenjiman@hotmail.com> wrote:
>
> Hi all,
>
> I just tried to run roscore and these errors came up:
>
>  File "/home/mars/ros/bin/roscore", line 34, in <module>
>    from ros import roslaunch
>  File "/home/mars/ros/core/roslib/src/ros/__init__.py", line 57, in
> __getattr__
>    return __import__(name)
>  File "/home/mars/ros/tools/roslaunch/src/roslaunch/__init__.py", line 48,
> in <module>
>    from roslaunch.scriptapi import ROSLaunch
>  File "/home/mars/ros/tools/roslaunch/src/roslaunch/scriptapi.py", line 42,
> in <module>
>    import roslaunch.parent
>  File "/home/mars/ros/tools/roslaunch/src/roslaunch/parent.py", line 55, in
> <module>
>    import roslaunch.server
>  File "/home/mars/ros/tools/roslaunch/src/roslaunch/server.py", line 70, in
> <module>
>    from roslib.msg import Log
> ImportError: No module named msg
>
> What could be the explanation for this?
>
> -Ian
> --
> View this message in context: http://ros-users.122217.n3.nabble.com/roscore-issue-tp970652p970652.html
> Sent from the ROS-Users mailing list archive at Nabble.com.
>
> ------------------------------------------------------------------------------
> This SF.net email is sponsored by Sprint
> What will you do first with EVO, the first 4G phone?
> Visit sprint.com/first -- http://p.sf.net/sfu/sprint-com-first
> _______________________________________________
> ros-users mailing list
> ros-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/ros-users
> _______________________________________________
> ros-users mailing list
> ros-users@code.ros.org
> https://code.ros.org/mailman/listinfo/ros-users
>