Default [Q] Problem with Android Virtual Device Manager

Hey @ all,

I've got a problem with the Android Virtual Device Manager.
I go step by step with this tutorial ([Guide] [Explained] Your first Android App
So i wan to create a new Virtual Device, but everytime I click on "OK" nothing happens. And with nothing, I mean nothing. Neither an force exit nor an error.
These are my settings, i hope someone can help me