--- loncom/interface/domainprefs.pm	2014/01/01 16:00:11	1.220
+++ loncom/interface/domainprefs.pm	2014/01/05 21:24:12	1.222
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Handler to set domain-wide configuration settings
 #
-# $Id: domainprefs.pm,v 1.220 2014/01/01 16:00:11 raeburn Exp $
+# $Id: domainprefs.pm,v 1.222 2014/01/05 21:24:12 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -420,7 +420,7 @@ sub handler {
     if ($phase eq 'process') {
         my $result = &Apache::lonconfigsettings::make_changes($r,$dom,$phase,$context,\@prefs_order,
                                                               \%prefs,\%domconfig,$confname,\@roles);
-        if (ref($result) eq 'HASH') {
+        if ((ref($result) eq 'HASH') && (keys(%{$result}))) { 
             $r->rflush();
             &devalidate_remote_domconfs($dom,$result);
         }
@@ -4546,7 +4546,8 @@ sub print_serverstatuses {
 sub serverstatus_pages {
     return ('userstatus','lonstatus','loncron','server-status','codeversions',
             'checksums','clusterstatus','metadata_keywords','metadata_harvest',
-            'takeoffline','takeonline','showenv','toggledebug','ping','domconf');
+            'takeoffline','takeonline','showenv','toggledebug','ping','domconf',
+            'uniquecodes');
 }
 
 sub coursecategories_javascript {