--- loncom/publisher/londiff.pm	2011/10/30 14:59:57	1.32
+++ loncom/publisher/londiff.pm	2011/11/07 18:28:28	1.33
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Handler to show differences between file versions
 #
-# $Id: londiff.pm,v 1.32 2011/10/30 14:59:57 raeburn Exp $
+# $Id: londiff.pm,v 1.33 2011/11/07 18:28:28 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -187,8 +187,7 @@ sub handler {
 	    @f2=&get_split_file($fn,'local');
 	    $r->print('<b>'.&mt('Construction Space Version').'</b>');
 	} else {
-	    my $fn=
-		'/home/httpd/html/res/'.$cudom.'/'.$cuname.'/';
+	    my $fn=$r->dir_config('lonDocRoot')."/res/$cudom/$cuname/";
 	    if ($env{'form.versiontwo'}) {
 		my ($main,$suffix,$is_meta)=
 		    &Apache::lonretrieve::get_file_info($efn);