--- loncom/interface/spreadsheet/Spreadsheet.pm	2008/09/12 14:35:46	1.80
+++ loncom/interface/spreadsheet/Spreadsheet.pm	2013/08/09 17:58:15	1.82
@@ -1,5 +1,5 @@
 #
-# $Id: Spreadsheet.pm,v 1.80 2008/09/12 14:35:46 bisitz Exp $
+# $Id: Spreadsheet.pm,v 1.82 2013/08/09 17:58:15 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -726,7 +726,7 @@ sub get_values {
 	my @num=($ld..$ud);
 	foreach my $a (@alpha) {
 	    foreach my $n (@num) {
-		if (exists($sheet_values{$a.$n})) {
+		if ((exists($sheet_values{$a.$n})) && ($sheet_values{$a.$n} ne '')) {
 		    push(@values,$sheet_values{$a.$n});
 		}
 	    }
@@ -742,8 +742,10 @@ sub get_values {
         $alpha=qq/[$la-$ua]/;
     }
     my $expression = '^'.$alpha.$num.'$';
-    foreach (grep /$expression/,keys(%sheet_values)) {
-	push(@values,$sheet_values{$_});
+    foreach my $item (grep(/$expression/,keys(%sheet_values))) {
+        unless ($sheet_values{$item} eq '') {
+	    push(@values,$sheet_values{$item});
+        }
     }
     return \@values;
 }
@@ -1532,9 +1534,13 @@ sub outsheet_csv   {
     my $file;
     unless ($file = Apache::File->new('>'.'/home/httpd'.$filename)) {
         $r->log_error("Couldn't open $filename for output $!");
-        $r->print(&mt('Problems occurred in writing the CSV file. '
-                     .'This error has been logged. '
-                     .'Please alert your LON-CAPA administrator.'));
+        $r->print(
+            '<p class="LC_error">'
+           .&mt('Problems occurred in writing the CSV file.')
+           .' '.&mt('This error has been logged.')
+           .' '.&mt('Please alert your LON-CAPA administrator.')
+           .'</p>'
+        );
         $r->print("<pre>\n".$csvdata."</pre>\n");
         return 0;
     }