new blog domain issue

I have recently changed my wordpress multisite from a sub-folder to a sub-domain install.

Now, when creating a new blog upon signup each user sees (sorry for the poor formatting) The ____ represents the textfield.

Yes, I'd like to create a new site

Blog URL (required)
http://________________.http://networkdomain.com
Site Title (required): __________________

The facebook sign-up simply allows for (http://networkdomain.com/____________)

I think the plugin still thinks that the network is in subfolder mode. How can I update the plugin to let it know that it is now in subdomain mode.

Thank you,
Adrian