WordPress database error: [Table 'worldc4_daniel.wp_sfmembers' doesn't exist]
SELECT usergroups FROM wp_sfmembers WHERE user_id = 1

WordPress database error: [Table 'worldc4_daniel.wp_sfusergroups' doesn't exist]
SELECT usergroup_id FROM wp_sfusergroups WHERE usergroup_name='Guests'

WordPress database error: [Table 'worldc4_daniel.wp_sfpermissions' doesn't exist]
SELECT forum_id, usergroup_id, permission_role FROM wp_sfpermissions ORDER BY permission_id

WordPress database error: [Table 'worldc4_daniel.wp_sfroles' doesn't exist]
SELECT role_id, role_actions FROM wp_sfroles ORDER BY role_id

WordPress database error: [Table 'worldc4_daniel.wp_sfmembers' doesn't exist]
SELECT user_id AS ID, display_name FROM wp_sfmembers WHERE pm = 1 ORDER BY display_name

WordPress database error: [Table 'worldc4_daniel.wp_sfmembers' doesn't exist]
SELECT * FROM wp_sfmembers WHERE user_id = 1

WordPress database error: [Table 'worldc4_daniel.wp_sfmembers' doesn't exist]
SELECT * FROM wp_sfmembers WHERE moderator=1 AND user_id=1

WordPress database error: [Table 'worldc4_daniel.wp_sfpermissions' doesn't exist]
SELECT permission_role FROM wp_sfpermissions WHERE usergroup_id=''

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I'm running cPanel management, with the following:

PHP version	4.4.7
MySQL version	5.0.45-community

Apache version

1.3.37 (Unix)

When I deactivate the plug-in, I receive an additional error:

Warning: Cannot modify header information - headers already sent by (output started at /home/worldc4/public_html/tumba/daniel/wp-includes/wp-db.php:216) in /home/worldc4/public_html/tumba/daniel/wp-includes/pluggable.php on line 694

But then once I reload it, everything works fine without errors, and the plugin is back to inactive.

Thank you in advance,

Daniel