Hi, I just installed ROS on my mac (EI captain few days ago) When I execute rosrun, I got problem like this:

... 
process[rosout-1]: started with pid [23531]
[rosout-1] process has died [pid 23531, exit code -5, cmd /Users/jj/ros_catkin_ws/install_isolated/lib/rosout/rosout __name:=rosout __log:=/Users/jj/.ros/log/cf4fd130-2d24-11e6-b7fe-a45e60bebab7/rosout-1.log].
log file: /Users/jj/.ros/log/cf4fd130-2d24-11e6-b7fe-a45e60bebab7/rosout-1*.log
[rosout-1] restarting process
dyld: Library not loaded: libroscpp.dylib
  Referenced from: /Users/jj/ros_catkin_ws/install_isolated/lib/rosout/rosout
  Reason: image not found
process[rosout-1]: started with pid [23532]
[rosout-1] process has died [pid 23532, exit code -5, cmd /Users/jj/ros_catkin_ws/install_isolated/lib/rosout/rosout __name:=rosout __log:=/Users/jj/.ros/log/cf4fd130-2d24-11e6-b7fe-a45e60bebab7/rosout-1.log].
log file: /Users/jj/.ros/log/cf4fd130-2d24-11e6-b7fe-a45e60bebab7/rosout-1*.log
[rosout-1] restarting process
dyld: Library not loaded: libroscpp.dylib
  Referenced from: /Users/jj/ros_catkin_ws/install_isolated/lib/rosout/rosout
  Reason: image not found

And when I run:

rosrun turtlesim turtlesim_node

dyld: Library not loaded: librospack.dylib
  Referenced from: /Users/jj/ros_catkin_ws/install_isolated/bin/rospack
  Reason: image not found
find: ftsopen: No such file or directory
[rosrun] Couldn't find executable named turtlesim_node below 
find: ftsopen: No such file or directory

I had the same problem.

Any suggestions?