If there's no /templates/<YOUR_TEMPLATE>/html/mod_sclogin directory, then the issue I thought was the problem isn't it.
If Error Reporting is enabled, but you're not seeing any other message than what you show, I'm confused. When the page stops rendering, its usually a PHP error causing things to stop. It doesn't sound like there's an error on the page though.
At this point, I'd have to ask you to send me admin credentials and let me know what we should do to recreate the issue (which module to enable, any other things to toggle). You can Private Message me the information by clicking the mail icon under my name to the left.
We'll get you going.
Thanks,
Alex