Index: modules/node.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/node.module,v
retrieving revision 1.529
diff -u -r1.529 node.module
--- modules/node.module	23 Sep 2005 08:47:13 -0000	1.529
+++ modules/node.module	24 Sep 2005 17:31:08 -0000
@@ -1322,8 +1322,10 @@
  */
 function node_validate_title($node, $message = NULL) {
   // Validate the title field.
-  if (trim($node->title) == '') {
-    form_set_error('title', isset($message) ? $message : t('You have to specify a title.'));
+  if (isset($node->title)) {
+    if (trim($node->title) == '') {
+      form_set_error('title', isset($message) ? $message : t('You have to specify a title.'));
+    }
   }
 }