Index: vertical_tabs.node_form.js
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/vertical_tabs/Attic/vertical_tabs.node_form.js,v
retrieving revision 1.1.2.5
diff -u -r1.1.2.5 vertical_tabs.node_form.js
--- vertical_tabs.node_form.js	6 Jan 2009 02:47:47 -0000	1.1.2.5
+++ vertical_tabs.node_form.js	1 Jun 2009 00:09:05 -0000
@@ -11,12 +11,17 @@
 }
 
 Drupal.verticalTabs.revision_information = function() {
-  var val = $('#edit-revision').attr('checked');
-  if (val) {
-    return Drupal.t('Create new revision');
+  if ($('#edit-revision').length) {
+    var val = $('#edit-revision').attr('checked');
+    if (val) {
+      return Drupal.t('Create new revision');
+    }
+    else {
+      return Drupal.t('Don\'t create new revision');
+    }
   }
   else {
-    return Drupal.t('Don\'t create new revision');
+    return '';
   }
 }