I'm trying to install WPMU on my site. I have only once manually installed a WP, but this is different ( i usually use CPanelX's Fantastico de Luxe) i get and erro when configuring it: Fatal error: Call to undefined function: wp_die() in /home/content/c/o/n/connorm/html/wpmu/wp-includes/wp-db.php on line 475

it went to the file and line 475 is
wp_die($message);

Can you please help. I need to be able to fix this Fast.
Thank You
Connor M

Here is another shot in the dark: wp_die sounds like the kind of function that runs when something completely unrelated (and rather important) has failed. I'm no wordpress guru, so I have no idea what might have caused that. Replace that line with this one: echo "Wordpress should have died here, because: " + $message;.
If you say what the message is, someone (other than me) may be able to help you. They may also say that I am terribly wrong, and that that line needs to be left the way it is, but this tells you what died (or at the very least gives us an error number to work from).