[SOLVED] How can I solve this?! :(

[GeekLynx]

Sometimes I install some new Graphical Environments, like KDE, GNOME Shell, Pantheon, etc... But with some of them, when I go to Backbox Desktop this happens: http://imgur.com/a/SzqVK !
There was a time I had uninstalled the backbox and the Unity Desktop, and then uninstalled all the other Graphical Environments and reinstalled Unity and the Backbox Desktop and everything returned to normal... When I open the settings nothing appears, and the wallpaper is as it is in the picture when I reboot my Computer!! I reinstalled the Xfce Desktop and backbox several times but remains the same! My question is: How can I solve this?!

Note:Sorry for my English errors...

[ZEROF]

Hi,

If you want to play and learn use Ubuntu or Debian if you want to learn pentesting use BackBox.