Enter F12(I configured shift+F12) to call Guake, Guake crashed and my desktop crashed too.

When I enter shift+F12 to toggle guake visibility, it seems like the first didn't work and then I try it again.

Then Guake Crash, and I exit to the Login Page on system so that I think the desktop crash too, I used xfce desktop.

If you need more information to fix bug, I will afford it, thank you very much.