Site Registration Issues

[quincyy]

I'm having registration issues with www.studentveteranforums.com. I have a 2 step registration with Bday then user name/etc. After proceeding I received an error at first. Then I went into the admin and turned off GZip Html output then tried registering again, now the page is blank after proceeding. Has anyone had this problem and how should I fix it? I also uploaded the register.php file again.

The error was: register.php?do=addmember

--------------- Added [DATE]1362417715[/DATE] at [TIME]1362417715[/TIME] ---------------

I disabled the plugin/hook system, edit includes/config.php with

Code:
define('DISABLE_HOOKS', true); under

Code:
<?php

fixed the problem, must have been a plugin error. vBulletin native is good.