CMake Error at /home/sj/catkin_ws/devel/share/realtime_tools/cmake/realtime_toolsConfig.cmake:113 (message):
  Project 'realtime_tools' specifies
  '/home/sj/catkin_ws/src/realtime_tools/include' as an include dir, which is
  not found.  It does neither exist as an absolute directory nor in
  '/home/sj/catkin_ws/src/realtime_tools//home/sj/catkin_ws/src/realtime_tools/include'.
  Check the issue tracker
  'https://github.com/ros-controls/realtime_tools/issues' and consider
  creating a ticket if the problem has not been reported yet.

sj@DR-Robotics:~/catkin_ws/src$ roslaunch open_manipulator_description open_manipulator_rviz.launch
[open_manipulator_rviz.launch] is neither a launch file in package [open_manipulator_description] nor is [open_manipulator_description] a launch file name
The traceback for the exception was written to the log file

It was because my .bashrc contains two setup.bash lines

source /opt/ros/kinetic/setup.bash

source ~/catkin_ws/devel/setup.bash
source ~/ws_baxter/devel/setup.bash

The upper one is the original one for OpenManipulator and the lower one is for running Baxter.