I had to unplug the roll off switch also to get my CC to work. With it plugged in, the cruise would stay on for a second the turn off. For whatever reason, it works just fine with one of the wires disconnected to it.. Just don't have the roll off feature. I'm okay with it, I just tap the brake when I want to cut it off. I have no idea why that would cause the cruise not to work, but it does. I can replace the cables and my luck it would happen again. 
Update: Got it fixed . . . I really like now being able to disable crusie with throttle . . . just safer.
Got a 20% discount and ordered a new throtle cable with the roll-over switch on it . . . put it on and cruise works 100% right now!
Just a note . . . I got the cruise working after disconnecting roll-over switch half way on the cable (cruise disengages with either brake appllication, but not a throttle move . . .
but really wanted it to work with a roll of the throttle too . . . just safer for me.
I inspected the switch on the end of the old cable . . . simply looks like there is a foam compound between the two male connectors on the switch on the cable itself itself . . . looks like that foam material deteriorated (probably from washes) so that the male leads were touch (and shorting out the cruise out totally)--which may be why it works again (with brakes only) when you unplug the switch.
If I ever have the problem again, instead of first buying a new cable with switch, I would shoot a little foam or wedge in some rubber between the two male leads on the switch itslef and reconnect to see if it worked. Just a thought. I think the cheap foam insulator between the two males leads is the culprit for switch cruise problems.
You might try that CVOstu before buying and installing another cable like I did.
Thanks everybody . . . your combined help now has my cruise working 100%--the first time it has worked at all in the 2 years I have owned it . . . I did not know what I was missing!