I have resolved the issue – seems that I had an extra space in the first line (see below). After removing the space before ‘WP_ALLOW_MULTISITE’, the database was able to connect. Still having trouble getting my Multi Site to work properly, but at least the main site is working ok. Thanks for your help.
/* Multisite */
define( ‘WP_ALLOW_MULTISITE’, true );
define(‘SUBDOMAIN_INSTALL’, true);
define(‘DOMAIN_CURRENT_SITE’, ‘darrenkmoore.com’);
define(‘PATH_CURRENT_SITE’, ‘/’);
define(‘SITE_ID_CURRENT_SITE’, 1);
define(‘BLOG_ID_CURRENT_SITE’, 1);
/* That’s all, stop editing! Happy blogging. */
define( ‘WP_ALLOW_REPAIR’, true );
Dan