Auspost Install Error

[lucky__starre]

When installing the auspost module I get this message after clicking on upload in Admin/Tools/Install SQL patches

#
# Table structure for table `geo_zones`
#

DROP TABLE IF EXISTS geo_zones;
CREATE TABLE geo_zones (
geo_zone_id int(11) NOT NULL auto_increment,
geo_zone_name varchar(32) NOT NULL default '',
geo_zone_description varchar(255) NOT NULL default '',
last_modified datetime default NULL,
date_added datetime NOT NULL default '',
PRIMARY KEY (geo_zone_id)
) TYPE=MyISAM;

1067 Invalid default value for 'date_added'
in:
[CREATE TABLE geo_zones ( geo_zone_id int(11) NOT NULL auto_increment, geo_zone_name varchar(32) NOT NULL default '', geo_zone_description varchar(255) NOT NULL default '', last_modified datetime default NULL, date_added datetime NOT NULL default '', PRIMARY KEY (geo_zone_id) ) TYPE=MyISAM;]
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What does this mean?

Thanks
Katie