URGENT: Trying to remove the Domain Mapping plugin

Hi there,

I'm trying to deactivate and remove the Domain Mapping plugin.

I've done this using the regular wordpress technique on a Multisite installation. i.e. plugins --> deactivate --> delete

Problem is, now the following is being printed in the headers of my website (both frontend and backend).

Warning: include_once(/home/rjtonlin/public_html/wp-content/sunrise.php) [function.include-once]: failed to open stream: No such file or directory in /home/rjtonlin/public_html/wp-includes/ms-settings.php on line 23

Warning: include_once() [function.include]: Failed opening '/home/rjtonlin/public_html/wp-content/sunrise.php' for inclusion (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/rjtonlin/public_html/wp-includes/ms-settings.php on line 23

Is there a specific technique to removing this plugin? I have also removed the snippet of code from WP-Config, and also deleted sunrish.php, with no luck!

I could do with some URGENT help with this!

Many thanks,

Richard