--- loncom/interface/spreadsheet/assesscalc.pm	2003/07/29 05:22:56	1.17
+++ loncom/interface/spreadsheet/assesscalc.pm	2003/09/05 01:06:45	1.18
@@ -1,5 +1,5 @@
 #
-# $Id: assesscalc.pm,v 1.17 2003/07/29 05:22:56 albertel Exp $
+# $Id: assesscalc.pm,v 1.18 2003/09/05 01:06:45 matthew Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -44,6 +44,8 @@ assesscalc
 package Apache::assesscalc;
 
 use strict;
+use warnings FATAL=>'all';
+no warnings 'uninitialized';
 use Apache::Constants qw(:common :http);
 use Apache::lonnet;
 use Apache::loncommon;
@@ -167,7 +169,6 @@ sub load_parameter_caches {
     #
     # Course Parameters Cache
     if (! %courseopt) {
-        &Apache::lonnet::logthis("loading course options");
         $current_course = $ENV{'request.course.id'};
         undef(%courseopt);
         if (! defined($current_name) || ! defined($current_domain)) {
@@ -689,7 +690,7 @@ These rows are saved in the students dir
 ########################################################
 ########################################################
 sub load_cached_export_rows {
-    %Exportrows = undef;
+    undef(%Exportrows);
     my @tmp = &Apache::lonnet::dump('nohist_calculatedsheets_'.
                                     $ENV{'request.course.id'},
                                     $current_domain,$current_name,undef);
@@ -735,7 +736,9 @@ sub export_data {
         ! exists($Exportrows{$symb}) || ! defined($Exportrows{$symb})  ||
         ! $self->check_expiration_time($Exportrows{$symb}->{'time'}) ||
         ! exists($Exportrows{$symb}->{$self->{'filename'}}) ||
-        ! defined($Exportrows{$symb}->{$self->{'filename'}})) {
+        ! defined($Exportrows{$symb}->{$self->{'filename'}}) ||
+        ! ref($Exportrows{$symb}->{$self->{'filename'}}) 
+        ) {
         $self->compute();
     }
     my @Data = @{$Exportrows{$symb}->{$self->{'filename'}}};