can't find in the plugins

[screamlsj]

i gti clone the kinetic version and catkin_make it as the tutorial from wiki.ros,however i can't find launchtree in the plugins list

[screamlsj]

and I tried
rosrun rqt_launchtree rqt_launchtree
,but get
qt_gui_main() found no plugin matching "rqt_launchtree.launchtree_plugin.LaunchtreePlugin"
as result.I don''t know what to do .I really need to use this plugin to understand how the launch file works.Is there anyone who know how to use it?

[screamlsj]

I solve the problem just now.
run rm ~/.config/ros.org/rqt_gui.ini
then 'rqt',the plugin will be find