I was trying to install compete code on my website nabtron.com today. Created an account there and they gave me a 
Well, i copied the code to my wordpress blog footer, emptied the cache so that the code appears on the footer to all visitors (and compete verification bot) but upon trying to verify the installation of the code on compete.com, it gave an error saying:
Copy the CompeteXL code, and place it on your site(s) to track Audience data.
Ya i know! it frustrates! tried a couple of times but didn’t work. So what was the solution? Here:
PATIENCE
Ya! just wait for a minute, and then click verify again, or the refresh button right next to your domain name in compete which reads “Follow these 3 steps and begin tracking your site’s Audience Profile statistics with CompeteXL today!”
Anyway! so after a while, when i clicked on refresh again, there was no more error and the javascript code was in place successfully!
(btw it’s compete xl, not complete xl)