what version of power store?
if this is power store 4, the power soter database should have a ps4_usergroups table, double check that the ps4_usergroups table exists, if not, run the following query:
CREATE TABLE IF NOT EXISTS `ps4_usergroups` (
`UserGroupID` int(11) NOT NULL auto_increment,
`UserGroup` varchar(50) default NULL,
PRIMARY KEY (`UserGroupID`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
/*Data for the table `usergroups` */
insert into `ps4_usergroups`(`UserGroupID`,`UserGroup`) values (1,'User');
insert into `ps4_usergroups`(`UserGroupID`,`UserGroup`) values (2,'Administrator');
