All I'm seeing is a blank page.
It's possible there is a PHP error. PHP errors are not shown by default in wordpress. In order to troubleshoot, try turning on debugging so that error messages can be displayed: http://codex.wordpress.org/Editing_wp-config.php#Debug
If error messages appear, you can either try googling for information, or post the error message here.
Then, when you're done troubleshooting, remember to turn debugging off again.