/**
  * Init the configuration parameters in the PS database. The default
  * values are from the array $this->defaults
  *
  * @return boolean
  */
 private function _initConfiguration()
 {
     try {
         foreach ($this->defaults as $key => $value) {
             Configuration::updateValue($key, $value);
         }
     } catch (Exception $e) {
         return false;
     }
     Everypay\Everypay::throwExceptions(true);
     return true;
 }