Index: branches/RC/core/units/configuration/configuration_event_handler.php
===================================================================
diff -u -N -r11200 -r11501
--- branches/RC/core/units/configuration/configuration_event_handler.php	(.../configuration_event_handler.php)	(revision 11200)
+++ branches/RC/core/units/configuration/configuration_event_handler.php	(.../configuration_event_handler.php)	(revision 11501)
@@ -144,14 +144,17 @@
 					}
 				}
 
-				if ($event->status == erSUCCESS && $items_info) { // reset cache
-					$id_field = $this->Application->getUnitOption($event->Prefix, 'IDField');
-					$table_name = $this->Application->getUnitOption($event->Prefix, 'TableName');
+				if ($event->status == erSUCCESS) { // reset cache
+					$refresh_sections = false;
+					if ($items_info) {
+						$id_field = $this->Application->getUnitOption($event->Prefix, 'IDField');
+						$table_name = $this->Application->getUnitOption($event->Prefix, 'TableName');
 
-					$sql = 'SELECT ' . $id_field . '
-							FROM ' . $table_name . '
-							WHERE ' . $id_field . ' IN (' . implode(',', array_keys($items_info)) . ') AND (VariableName = "AdvancedUserManagement")';
-					$refresh_sections = $this->Conn->GetCol($sql);
+						$sql = 'SELECT ' . $id_field . '
+								FROM ' . $table_name . '
+								WHERE ' . $id_field . ' IN (' . implode(',', array_keys($items_info)) . ') AND (VariableName = "AdvancedUserManagement")';
+						$refresh_sections = $this->Conn->GetCol($sql);
+					}
 
 					if ($refresh_sections) {
 						// reset sections too, because of AdvancedUserManagement