Index: branches/RC/core/kernel/db/dbitem.php
===================================================================
diff -u -r10794 -r11253
--- branches/RC/core/kernel/db/dbitem.php	(.../dbitem.php)	(revision 10794)
+++ branches/RC/core/kernel/db/dbitem.php	(.../dbitem.php)	(revision 11253)
@@ -79,7 +79,15 @@
 
 	function GetOriginalField($field_name, $formatted = false, $format=null)
 	{
-		$value = $this->OriginalFieldValues[$field_name];
+		if (array_key_exists($field_name, $this->OriginalFieldValues)) {
+			// item was loaded before
+			$value = $this->OriginalFieldValues[$field_name];
+		}
+		else {
+			// no original fields -> use default field value
+			$value = $this->Fields[$field_name]['default'];
+		}
+
 		if (!$formatted) {
 			return $value;
 		}