Horde DB Error: extension not found

[starrscre4m79]

After a reboot with no updates to plesk, webmail has stopped working and is throwing "Horde DB Error: extension not found" at the users.

I've gone through the steps outlined here:
http://kb.swsoft.com/article_50_940_en.html

..and everything seems to be in order.

The error in the log is:

Jan 25 01:11:38 HORDE [emergency] [horde] DB Error: extension not found: , localhost, horde, /var/lib/mysql/mysql.sock, unix, horde, y4zs3mtE7an, utf8,

mysql
, horde, horde.perms, horde_datatree, horde_datatree_attributes [on line 1615 of "/usr/share/psa-horde/lib/Horde/DataTree/sql.php"]


line 1615 says:
### line 1615

/* Connect to the SQL server using the supplied parameters. */
1611 require_once 'DB.php';
1612 $this->_db = &DB::connect($this->_params,
1613 array('persistent' => !empty($this->_params['persistent'])));
1614 if (is_a($this->_db, 'PEAR_Error')) {
1615 Horde::fatal($this->_db, __FILE__, __LINE__);
1616 }

I've seen this problem mentioned once in the forums, and it says that the mysql extensions are missing in php.ini... I've checked that, they're there. Any Ideas?

 

[wagnerch]

This may have to do with the php-imap extension.