Error when trying to rosrun turtlebot_dashboard. Any ideas?

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Hello. I'm trying to set up my Turtlebot for the first time. I'm following the tutorial http://www.ros.org/wiki/turtlebot_bringup/Tutorials/TurtleBot%20Bringup and everything is successful until the following:

turtlebot@turtlebot-laptop:~/ros/turtlebot/turtlebot_bringup/upstart$ rosrun turtlebot_dashboard turtlebot_dashboard&
[2] 19832
turtlebot@turtlebot-laptop:~/ros/turtlebot/turtlebot_bringup/upstart$ [rospack] opendir error [No such file or directory] while crawling /home/turtlebot/ros_workspace
[rospack] opendir error [No such file or directory] while crawling /home/turtlebot/ROS/rosjava
Traceback (most recent call last):
  File "/home/turtlebot/ros/turtlebot_viz/turtlebot_dashboard/scripts/turtlebot_dashboard", line 50, in <module>
    import turtlebot_dashboard
  File "/home/turtlebot/ros/turtlebot_viz/turtlebot_dashboard/src/turtlebot_dashboard/__init__.py", line 1, in <module>
    from turtlebot_frame import *
  File "/home/turtlebot/ros/turtlebot_viz/turtlebot_dashboard/src/turtlebot_dashboard/turtlebot_frame.py", line 40, in <module>
    import rxtools.cppwidgets as rxtools
  File "/home/turtlebot/ros/rx/rxtools/src/rxtools/cppwidgets.py", line 34, in <module>
    from rxtoolscpp import *
ImportError: No module named rxtoolscpp