Could you give me a specific URL where the SCLogin module is on your page? I cannot find it easily.
However, I did go to the Joomla users component to login at
www.roverradio.com/index.php?option=com_users&view=login - If this is not the correct page to be looking at, please let me know. I was able to successfully, but got the following error:
You are not authorised to view this resource.
Somehow JFBConnect is being redirected to
www.roverradio.com/index.php?option=com_users&view=profile and this page is then being redirected to
www.roverradio.com/plus which has the error. It's possible your New User Redirection setting in JFBConnect is incorrect or some plugin is redirecting to that page.
Could you look at your system plugins and see if there's anything enabled that redirects on login or logout? For example, if you have JomSocial and Community Builder installed, these extensions have plugins that do this.
-Melissa