Mistake in install.php

    switch ($db_type)
    {
        case 'mysql':
        case 'mysqli':
            $sql = 'CREATE TABLE '.$db_prefix."config (
                    conf_name VARCHAR(255) NOT NULL DEFAULT '',
                    conf_value TEXT,
                    PRIMARY KEY (conf_name)
                    ) TYPE=MyISAM;";
            break;

        case 'pgsql':
            $sql = 'CREATE TABLE '.$db_prefix."config (
                    conf_name VARCHAR(255) NOT NULL DEFAULT '',
                    conf_value TEXT,
                    PRIMARY KEY (conf_name)
                    )";
            break;

        case 'sqlite':
            $sql = 'CREATE TABLE '.$db_prefix."config (
                    conf_name VARCHAR(255) NOT NULL DEFAULT '',
                    conf_value TEXT,
                    PRIMARY KEY (conf_name)
                    )";
            break;
    }

    $db->query($sql) or error('Unable to create table '.$db_prefix.'online. Please check your settings and try again.',  __FILE__, __LINE__, $db->error());