Index: branches/RC/core/units/general/cat_event_handler.php
===================================================================
diff -u -r10643 -r10671
--- branches/RC/core/units/general/cat_event_handler.php	(.../cat_event_handler.php)	(revision 10643)
+++ branches/RC/core/units/general/cat_event_handler.php	(.../cat_event_handler.php)	(revision 10671)
@@ -327,8 +327,36 @@
 			$rel_table = $this->Application->getUnitOption('rel', 'TableName');
 			$item_type = $this->Application->getUnitOption($event->Prefix, 'ItemType');
 
+			// process case, then this list is called inside another list
+			$prefix_special = $event->getEventParam('PrefixSpecial');
+			if (!$prefix_special) {
+				$prefix_special = $this->Application->Parser->GetParam('PrefixSpecial');
+			}
+
+			$id = false;
+			if ($prefix_special !== false) {
+				$processed_prefix = $this->Application->processPrefix($prefix_special);
+				if ($processed_prefix['prefix'] == $related_prefix) {
+					// printing related categories within list of items (not on details page)
+					$list =& $this->Application->recallObject($prefix_special);
+					/* @var $list kDBList */
+
+					$id = $list->GetID();
+				}
+			}
+
+			if ($id === false) {
+				// printing related categories for single item (possibly on details page)
+				if ($related_prefix == 'c') {
+					$id = $this->Application->GetVar('m_cat_id');
+				}
+				else {
+					$id = $this->Application->GetVar($related_prefix . '_id');
+				}
+			}
+
 			$p_item =& $this->Application->recallObject($related_prefix.'.current', null, Array('skip_autoload' => true));
-			$p_item->Load( $this->Application->GetVar($related_prefix.'_id') );
+			$p_item->Load( (int)$id );
 
 			$p_resource_id = $p_item->GetDBField('ResourceId');