Cannot find a valid CNAME record?

I am trying to add a tracking domain..
Now this domain has a dedicated IP as suggested...

It also has my CPVLab tracking installed..
I created a subdomain and added the CNAME entry pointing to my MW installation domain.

Subdomain I used is "go2"

But I am getting this error: Cannot find a valid CNAME record for! Remember, the CNAME of must point to!

I know I am doing something wrong, but I am not a techy person, a little help would be great!
Put here the real domain name and real cname so that i can run dns queries against them and see what you did.