SQL error

[MikeChoy]

I've got two sql error while upgrading to 1.4 alpha3

INSERT INTO `sgdtt_hook_module` (`id_module`, `id_hook`, `position`) VALUES ((SELECT `id_module` FROM `sgdtt_module` WHERE `name` = 'crossselling'), 9, (SELECT max_position FROM (SELECT MAX(position)+1 as max_position FROM `sgdtt_hook_module` WHERE `id_hook` = 9) tmp))(1048)

Column 'id_module' cannot be null



INSERT INTO `sgdtt_hook_module` (`id_module`, `id_hook`, `position`) VALUES (23, 9, (SELECT max_position from (SELECT MAX(position)+1 as max_position FROM `sgdtt_hook_module` WHERE `id_hook` = 9) tmp))

(1062) Duplicate entry '23-9' for key 'PRIMARY'



Advice pls on how to resolve the problem.

Regards