When we turned off "Allow Popups", the Login and Register buttons simply brought up BLANK home pages. It seems no default Login and Register pages are defined in DNN 6.2.2. Maybe it is assumed that people will use the popups (which do work well). To allow us to login to the site, we went into the database portal table and set Allow Popups to "True". Then restarted the webserver to refresh the site. We could then login using the popup as before. We then created a custom login page and added the login module and then pointed the Admin/Login drop down to this. It now works. However when we tried to create a custom Register page, we found there was no Register Module available to put onto the page. Also, if you type in [domainName]/register.aspx, you get a blank page with no Register fields. In DNN 6.2.1 this is not the case. Everything works as expected . . . so something appears to have changed in 6.2.2.