Ok that is the problem. The user your web server is accessing the database as must not have rights to create tables. Run these sql commands on your database to create the tables needed.
CREATE TABLE wp_PO_groups (
group_id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
group_name varchar(255) NOT NULL default '',
group_members longtext DEFAULT NULL,
PRIMARY KEY PO_group_id (group_id)
);
CREATE TABLE wp_PO_post_plugins (
post_id bigint(20) unsigned NOT NULL,
permalink longtext NOT NULL default '',
disabled_plugins longtext NOT NULL default '',
enabled_plugins longtext NOT NULL default '',
PRIMARY KEY PO_post_id (post_id)
);
CREATE TABLE wp_PO_url_plugins (
url_id bigint(20) unsigned NOT NULL auto_increment,
permalink longtext NOT NULL default '',
children int(1) NOT NULL default 0,
disabled_plugins longtext NOT NULL default '',
enabled_plugins longtext NOT NULL default '',
PRIMARY KEY PO_id (url_id)
);