WordPress MU

<?php
// Plugin Name: Multi-DB
// Plugin URI: http://premium.wpmudev.org/project/Multiple-Databases
// Author: Andrew Billits (Incsub)
// Version: 2.7.0
define ('DB_SCALING', '16');
add_dc_ip('127.0.0.1.', 'dc1');
add_global_table('WPMUDB_ceo');
add_db_server('WPMUDB', 'dc1', 1, 1,'localhost','localhost','WPMUDB_ceo', 'WPMUDB_ceo', '*****');
add_db_server('0', 'dc1', 1, 1,'localhost','localhost', 'WPMUDB_ceo0', 'WPMUDB_ceo', '*****');
add_db_server('1', 'dc1', 1, 1,'localhost','localhost', 'WPMUDB_ceo1', 'WPMUDB_ceo', '*****');
add_db_server('2', 'dc1', 1, 1,'localhost','localhost', 'WPMUDB_ceo2', 'WPMUDB_ceo', '*****');
add_db_server('3', 'dc1', 1, 1,'localhost','localhost', 'WPMUDB_ceo3', 'WPMUDB_ceo', '*****');
add_db_server('4', 'dc1', 1, 1,'localhost','localhost', 'WPMUDB_ceo4', 'WPMUDB_ceo', '*****');
add_db_server('5', 'dc1', 1, 1,'localhost','localhost', 'WPMUDB_ceo5', 'WPMUDB_ceo', '*****');
add_db_server('6', 'dc1', 1, 1,'localhost','localhost', 'WPMUDB_ceo6', 'WPMUDB_ceo', '*****');
add_db_server('7', 'dc1', 1, 1,'localhost','localhost', 'WPMUDB_ceo7', 'WPMUDB_ceo', '*****');
add_db_server('8', 'dc1', 1, 1,'localhost','localhost', 'WPMUDB_ceo8', 'WPMUDB_ceo', '*****');
add_db_server('9', 'dc1', 1, 1,'localhost','localhost', 'WPMUDB_ceo9', 'WPMUDB_ceo', '*****');
add_db_server('a', 'dc1', 1, 1,'localhost','localhost', 'WPMUDB_ceoa', 'WPMUDB_ceo', '*****');
add_db_server('b', 'dc1', 1, 1,'localhost','localhost', 'WPMUDB_ceob', 'WPMUDB_ceo', '*****');
add_db_server('c', 'dc1', 1, 1,'localhost','localhost', 'WPMUDB_ceoc', 'WPMUDB_ceo', '*****');
add_db_server('d', 'dc1', 1, 1,'localhost','localhost', 'WPMUDB_ceod', 'WPMUDB_ceo', '*****');
add_db_server('e', 'dc1', 1, 1,'localhost','localhost', 'WPMUDB_ceoe', 'WPMUDB_ceo', '*****');
add_db_server('f', 'dc1', 1, 1,'localhost','localhost', 'WPMUDB_ceof', 'WPMUDB_ceo', '*****');

//------------------------------------------------------------------------//
//---VIP Blogs------------------------------------------------------------//
//------------------------------------------------------------------------//
// Usage: add_vip_blog(BLOG_ID, DS)
// EX: add_vip_blog(1, 'vip1');

Above Our db-config.php.

Error list are below

[Sun Apr 26 21:57:32 2009] [error] [client 125.177.95.154] PHP Warning: Invalid argument supplied for foreach() in /home/buddyceo/buddyceo.com/html/wp-content/db.php on line 770
[Sun Apr 26 21:57:32 2009] [error] [client 125.177.95.154] WordPress database error No database selected for query SELECT * FROM wp_blogs WHERE domain = 'buddyceo.com' made by require_once
[Sun Apr 26 21:57:32 2009] [error] [client 125.177.95.154] PHP Warning: Invalid argument supplied for foreach() in /home/buddyceo/buddyceo.com/html/wp-content/db.php on line 750
[Sun Apr 26 21:57:32 2009] [error] [client 125.177.95.154] PHP Warning: Invalid argument supplied for foreach() in /home/buddyceo/buddyceo.com/html/wp-content/db.php on line 770
[Sun Apr 26 21:57:32 2009] [error] [client 125.177.95.154] WordPress database error No database selected for query SELECT * FROM wp_blogs WHERE domain = 'buddyceo.com' made by require_once
.
.
.
and repeat

Best bet would be to ask on their forums:

http://premium.wpmudev.org/forums/

It may be helpful if you walked through what specific steps you did. There's instructions included in the download.

Yep, you'll need to post in the premium forums. We don't provide support for our plugins here. It's similar to how a wpmu admin shouldn't send their users here for support.

Thanks,
Andrew

But they do. :)

(And the regular wp.org forums)