rosversion error when using roslaunch or roscore

edit

 ----------


    /ros/src # roscore
    WARNING: unable to configure logging. No log files will be generated
    Checking log directory for disk usage. This may take awhile.
    Press Ctrl-C to interrupt
    Done checking log file disk usage. Usage is <1GB.

    Invalid <param> tag: Cannot load command parameter [rosversion]: command [rosversion roslaunch] returned with code [1]. 

    Param xml is <param command="rosversion roslaunch" name="rosversion"/>
    The traceback for the exception was written to the log file
    No handlers could be found for logger "roslaunch"


/ros/src # rosversion -d
indigo

/ros/src #  env | grep ROS
ROS_PACKAGE_PATH=/ros/src:/opt/ros/indigo/share
ROS_ETC_DIR=/opt/ros/indigo/etc/ros
ROS_DISTRO=indigo
ROS_ROOT=/opt/ros/indigo/share/ros
ROS_MASTER_URI=http://192.168.1.69:11311