is there any conflict with SurferEq?

What do you mean "no graphic EQ in the spectrum analyzer"? Where do you see a spectrum analyzer in the vid of it on their web site?

I don't have that plugin so I'm not an expert on it to say the least. But I wonder if you have a signal going through it? Audio playing? Also what version of Sonar are you using? 
 
I think that yellow line is a form of spectrum.

I tried the Surfer EQ demo in X2, and I could never get it to work without crashing Sonar. So you seem to be doing better than I was.
 
However, I think the problem may be related. It worked fine when the plug in wasn't displayed, but as soon as I  opened the plug in window, everything would become laggy and unresponsive and Sonar would crash shortly after.
 
So I suspect there is something going on in the way SurferEQ draws it's UI that Sonar doesn't get along with. I contacted Sound Radix and they didn't know what the problem was.
 
Shame, as it's a brilliant plug in. If I could get it working in Sonar, I'd buy it in a heartbeat.