Error installing the database<br/>Query was ; 
CREATE TABLE wp_usermeta (
  umeta_id  integer   NOT NULL  PRIMARY KEY AUTOINCREMENT ,
  user_id  integer   NOT NULL default '0',
  meta_key   text default NULL,
  meta_value  text ) ; CREATE INDEX user_id_41 on wp_usermeta (user_id); CREATE INDEX meta_key_13 on wp_usermeta (meta_key).<br/>Error message was: Array
(
    [0] => HY000
    [1] => 1
    [2] => index meta_key_13 already exists
)
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /var/www/mail-orders.com/wp-content/pdo/driver_sqlite/schema.php:45) in <b>/var/www/mail-orders.com/wp-includes/pluggable.php</b> on line <b>865</b><br />