I am having this sudden issue with registering new users on my site. When a new user registers everything goes fine until the last screen when the username, email and time zone are displayed with a "Finish" button.

Usually pressing the "Finish" button took me to the screen that informs me that an email has been sent. Now for some reason I either get a blank page or a "Page cannot be displayed error".

I am using 2.0.15 version of the CMS. Any ideas where I should start to look to fix this?

Thanks!!

-James