Index: trunk/kernel/units/visits/visits_event_handler.php
===================================================================
diff -u -r2437 -r2438
--- trunk/kernel/units/visits/visits_event_handler.php	(.../visits_event_handler.php)	(revision 2437)
+++ trunk/kernel/units/visits/visits_event_handler.php	(.../visits_event_handler.php)	(revision 2438)
@@ -78,15 +78,16 @@
 		function prepareObject(&$object, &$event)
 		{
 			$types = $event->getEventParam('types');
-			if ($types=='myvisitors' || !$types){
-					$object->addCalculatedField('OrderTotalAmountSum', 'SUM(ord.SubTotal+ord.ShippingCost+ord.VAT-ord.CouponDiscount)');
-					$object->addCalculatedField('OrderAffiliateCommissionSum', 'SUM(ord.AffiliateCommission)');
-					$object->addCalculatedField('OrderCountByVisit', 'COUNT(OrderId)');
-			}
-			if (method_exists($object, 'AddGroupByField') && !$types){
-					$object->AddGroupByField('%1$s.VisitId');
-			}
-			
+			if(method_exists($object, 'AddGroupByField')){
+				if ($types=='myvisitors' || !$types){
+						$object->addCalculatedField('OrderTotalAmountSum', 'SUM(ord.SubTotal+ord.ShippingCost+ord.VAT-ord.CouponDiscount)');
+						$object->addCalculatedField('OrderAffiliateCommissionSum', 'SUM(ord.AffiliateCommission)');
+						$object->addCalculatedField('OrderCountByVisit', 'COUNT(OrderId)');
+				}
+				if (!$types){
+						$object->AddGroupByField('%1$s.VisitId');
+				}
+			}			
 		}
 		
 	}