Can't see controls in Project mix control panel

Hi all,

I have just updated to win7 64bit and although my project mix is connected and shows up in my DAW, I cannot get the control panel to display properly. The window opens but it is completely blank and I cannot see the controls that were available on win xp. Just wondering if anyone knew what might be wrong, I've tried to reinstalling several times but still no luck.

Thanks in advance!