Index: branches/unlabeled/unlabeled-1.75.2/core/kernel/db/db_event_handler.php
===================================================================
diff -u -r6575 -r6582
--- branches/unlabeled/unlabeled-1.75.2/core/kernel/db/db_event_handler.php	(.../db_event_handler.php)	(revision 6575)
+++ branches/unlabeled/unlabeled-1.75.2/core/kernel/db/db_event_handler.php	(.../db_event_handler.php)	(revision 6582)
@@ -1976,6 +1976,37 @@
 
 		}
 
+		function OnDeleteExportPreset(&$event)
+		{
+			$object =& $event->GetObject();
+
+			$items_info = $this->Application->GetVar( $event->getPrefixSpecial(true) );
+			if($items_info)
+			{
+				list($id,$field_values) = each($items_info);
+				$preset_key = $field_values['ExportPresets'];
+
+				$user =& $this->Application->recallObject('u');
+				$export_settings = $user->getPersistantVar('export_settings');
+				if (!$export_settings) return ;
+				$export_settings = unserialize($export_settings);
+				if (!isset($export_settings[$event->Prefix])) return ;
+
+				$to_delete = '';
+				$export_presets = array(''=>'');
+				foreach ($export_settings[$event->Prefix] as $key => $val) {
+					if (implode('|', $val['ExportColumns']) == $preset_key) {
+						$to_delete = $key;
+						break;
+					}
+				}
+				if ($to_delete) {
+					unset($export_settings[$event->Prefix][$to_delete]);
+					$user->setPersistantVar('export_settings', serialize($export_settings));
+				}
+			}
+		}
+
 	}