Change lines like this
CREATE TABLE `oxtb_accounts` (
`account_id` mediumint(9) NOT NULL,
`account_type` varchar(16) NOT NULL DEFAULT '',
`account_name` varchar(255) DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
to
CREATE TABLE `oxtb_accounts` (
`account_id` mediumint(9) NOT NULL,
`account_type` varchar(16) NOT NULL DEFAULT '',
`account_name` varchar(255) DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=utf8;