Configuring game pad

[Windwolf55x5]

I'm have trouble configuring the game pad in retropie, when ever I get to setting the hotkey it freezes and won't go any further. I set the hotkey as not defined and it comes up with asking if i want to set the hotkey as select, yes or no. And it won't let me press ether. If I try to set the hotkey my self it won't even let me press ok.