Index: trunk/core/units/general/cat_event_handler.php
===================================================================
diff -u -r5121 -r5162
--- trunk/core/units/general/cat_event_handler.php	(.../cat_event_handler.php)	(revision 5121)
+++ trunk/core/units/general/cat_event_handler.php	(.../cat_event_handler.php)	(revision 5162)
@@ -489,7 +489,10 @@
 		$object =& $event->getObject( Array('skip_autoload' => true) );
 
 		$property_map = $this->Application->getUnitOption($event->Prefix, 'ItemPropertyMappings');
-
+		if (!$property_map) {
+			return ;
+		}
+		
 		// new items
 		$object->addCalculatedField('IsNew', '	IF(%1$s.NewItem = 2,
 													IF(%1$s.CreatedOn >= (UNIX_TIMESTAMP() - '.