--- loncom/interface/lonprintout.pm	2022/06/11 14:20:41	1.677
+++ loncom/interface/lonprintout.pm	2022/06/11 14:38:27	1.678
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Printout
 #
-# $Id: lonprintout.pm,v 1.677 2022/06/11 14:20:41 raeburn Exp $
+# $Id: lonprintout.pm,v 1.678 2022/06/11 14:38:27 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -1236,6 +1236,7 @@ sub is_code_valid {
     my ($code_type, $code_length) = ('letter', 6);	# defaults.
     my @lines = &Apache::lonnet::get_scantronformat_file();
     foreach my $line (@lines) {
+        next if (($line =~ /^\#/) || ($line eq ''));
 	my ($name, $type, $length) = (split(/:/, $line))[0,2,4];
 	if($name eq $code_option) {
 	    $code_length = $length;
@@ -3240,6 +3241,7 @@ ENDPART
          my @lines = &Apache::lonnet::get_scantronformat_file();
 	 my ($code_type,$code_length,$bubbles_per_row)=('letter',6,10);
 	 foreach my $line (@lines) {
+             next if (($line =~ /^\#/) || ($line eq ''));
 	     my ($name,$type,$length,$bubbles_per_item) = 
                  (split(/:/,$line))[0,2,4,17];
 	     if ($name eq $code_option) {