Just to inform new zenners as me.
After installing ZC 139h I found one error. Checkout process was stopped with error 1146 database xy.ship2pay does not exist. I found simple solution for Ship2pay addon. I was an error in /includes/database_tables.php where you need define database with correct prefix and name. That is all. It works fine. Code: define('TABLE_SHIP2PAY', DB_PREFIX . 'ship2pay');

Mike