--- loncom/interface/lontrackstudent.pm	2008/12/11 14:55:15	1.24
+++ loncom/interface/lontrackstudent.pm	2008/12/20 04:31:55	1.25
@@ -1,6 +1,6 @@
 # The LearningOnline Network with CAPA
 #
-# $Id: lontrackstudent.pm,v 1.24 2008/12/11 14:55:15 bisitz Exp $
+# $Id: lontrackstudent.pm,v 1.25 2008/12/20 04:31:55 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -516,6 +516,11 @@ sub handler {
     #
     # We will almost always need this...
     my $navmap = Apache::lonnavmaps::navmap->new();
+    if (!defined($navmap)) {
+        my $requrl = $r->uri;
+        $env{'user.error.msg'} = "$requrl:bre:0:0:Navmap initialization failed.";
+        return HTTP_NOT_ACCEPTABLE;
+    }
     # 
     &Apache::lonhtmlcommon::clear_breadcrumbs();
     &Apache::lonhtmlcommon::add_breadcrumb({href=>'/adm/studentactivity',