Hi im getting error

exception 'PDOException' with message 'SQLSTATE[42000]: [Microsoft][ODBC Driver 11 for SQL Server][SQL Server]Multiple identity columns specified for table 'Character'. Only one identity column per table is allowed.' in C:\xampp\htdocs\application\libraries\lib.db.php:0
Stack trace:
#0 C:\xampp\htdocs\application\libraries\lib.db.php(0): PDO->query()
#1 C:\xampp\htdocs\setup\application\models\model.setup.php(0): db->query()
#2 C:\xampp\htdocs\setup\application\controllers\controller.setup.php(0): Msetup->add_column()
#3 C:\xampp\htdocs\setup\application\controllers\controller.setup.php(0): setup->add_sql_columns()
#4 C:\xampp\htdocs\system\router.class.php(0): setup->add_columns('1.1.0')
#5 C:\xampp\htdocs\setup\index.php(0): router->route()
#6 {main}

Buenos dias alguno sabe, como hago para activar el cambio de idioma del admincp?