Control Panel

I have had a problem with two Dell 6500 laptops recently. When I install Dopus (64 bit) the Control Panel refuses to show. Even trying control.exe from the dos prompt fails to get the control panel up.
Any ideas?

Sounds like you're using an old version of Opus.

Not at all, 9.5.
Odd thing is it doesn't always happen. It did when I first installed it on my machine. I did a system restore and got the control panel back and when I installed Opus again it was fine.
On the machine I installed it on yesterday it vanished, I reinstalled Windows 7 (get rid of all teh crap Dell put on!) reinstalled Opus and it's gone again.

I haven't seen Windows 7, nor a 64 bit OS yet, but have you gone into the Opus preferences and tweaked the following settings to see if that makes a difference?