1.after install cannot run
http://answers.ros.org/question/86526/turtlemimiclaunch-is-neither-a-launch-file-in-package-test_launch-nor-is-test_launch-a-launch-file-name/
You can add the path of your catkin_ws in ~/.bashrc .sudo gedit ~/.bashrcadd the path of your catkin workspace in bashrcYourPath/catkin_ws/devel/setup.bashand then run in terminal "source ~/.bashrc"And
then you never get this error.