--- loncom/interface/londocs.pm	2017/08/27 02:36:49	1.637
+++ loncom/interface/londocs.pm	2017/08/31 20:02:35	1.639
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Documents
 #
-# $Id: londocs.pm,v 1.637 2017/08/27 02:36:49 raeburn Exp $
+# $Id: londocs.pm,v 1.639 2017/08/31 20:02:35 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -5678,6 +5678,7 @@ sub handler {
 	  undef($hadchanges);
           $uploadphase = &process_file_upload(\$upload_output,$coursenum,$coursedom,
                                               \%allfiles,\%codebase,$context,$crstype);
+          undef($navmap);
 	  if ($hadchanges) {
 	      &mark_hash_old();
 	  }
@@ -6477,8 +6478,10 @@ unless ($container eq 'page') {
              $r->print('<p><span class="LC_error">'.$error.'</span></p>');
           }
           if ($hadchanges) {
-             &mark_hash_old();
-          }
+              unless (&is_hash_old()) {
+                  &mark_hash_old();
+              }
+	  }
 
           &changewarning($r,'');
         }