Assistance with Google Maps API Key

I moved a website from one domain to another and now the Google Maps API key does not work. I have issued a new key for the new domain and put it into the places in the code where I was able to see the old key, but it still does not work. I get the javascript error message "This site needs a different Google Maps API key". I did not write the code for this site so I do not know where else this old key may be hidden. Your job is to get my API key working for this domain. I will give the domain, API key, and FTP credentials to the winning bidder. The site uses Smarty templates, if that makes a difference. But other than that is straight LAMP.