Thanks Mike, working.
Next problem. I followed the instructions here to set up Twitter and Google.
Now I'm getting the Twitter and Google buttons in the Sign up.
And I have the Associate buttons in my profile. http://www.avforums.com/account/external-accounts
However, when I click either button, I get an error:
Twitter: If I click to log in or associate, I get taken to a page which reads: AVForums - Error
An unexpected error occurred. Please try again later.
Google: A pop-up opens which reads:
no application name