Need help with Protools 10 and Mackie Control surface

I have a Mackie hui Control surface..and when I hook it up to ProTools...and hit the space bar On the keyboard The control surface restarts or freezes...it does it whenever the master faith and ProTools is not all the way down why is that can anyone help...if I turn the masturbator down in ProTools the Control surface works fine...i'm running ProTools 10 and ProTools 11 does the same problem..