Server error?

Hello-

I have installed and activated your plugin but when I go to the settings page this error message comes up:

“Server error
The website encountered an error while retrieving http://dentiststudybuddy.org.uk/wp-admin/options-general.php?page=email-log. It may be down for maintenance or configured incorrectly.”

What has been configured incorrectly?

http://ww.wp.xz.cn/extend/plugins/email-log/