I manually added this via phpmyadmin
CREATE TABLE pp_usergroups (groupid int(5) NOT NULL auto_increment, groupname varchar(50) NOT NULL default '', cpaccess smallint(3) NOT NULL default '0', modaccess smallint(3) NOT NULL default '0', uploads smallint(3) NOT NULL default '1', comments smallint(3) NOT NULL default '1', diskspace int(10) default NULL, uploadsize int(10) default NULL, editpho int(3) NOT NULL default '0', editposts int(3) NOT NULL default '0', useralbums int(3) NOT NULL default '0',reqmod INT(3) DEFAULT '0' NOT NULL, canassign INT(3) DEFAULT '0' NOT NULL, PRIMARY KEY (groupid)) TYPE=MyISAM;
INSERT INTO pp_usergroups VALUES (1,'Administrator',1,1,1,1,'','',1,1,1,0,0);
INSERT INTO pp_usergroups VALUES (2,'Moderator','','',1,1,'','',1,1,1,0,0);
INSERT INTO pp_usergroups VALUES (3,'Registered','','',1,1,'','',1,1,1,0,0);
INSERT INTO pp_usergroups VALUES (4,'Unregistered','','','','','','',0,0,0,0,0);
and the Cookies in config inc.php on $cookieprefix="w3t_"; set. Then it should run.