So I set up the twitter app on my account. I have the consumer key and secret from there and copied into Joomla.

The message I get when clicking on Sign in with Twitter is

"The request token for this page is invalid. It may have already been used, or expired because it is too old. Please go back to the site or application that sent you here and try again; it was probably just a mistake"

Any ideas?

I had a look on my Twitter app page and on the app page there is a Test OAuth button. When I press this button twitter than shows a Sorry that page doesn't exist so completely confused.