--- loncom/homework/optionresponse.pm	2003/01/13 21:24:39	1.66
+++ loncom/homework/optionresponse.pm	2003/01/19 08:10:22	1.67
@@ -1,7 +1,7 @@
 # LearningOnline Network with CAPA
 # option list style responses
 #
-# $Id: optionresponse.pm,v 1.66 2003/01/13 21:24:39 sakharuk Exp $
+# $Id: optionresponse.pm,v 1.67 2003/01/19 08:10:22 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -248,6 +248,7 @@ sub whichfoils {
   my ($max,$randomize)=@_;
   $max = &getfoilcounts($max);
   &Apache::lonxml::debug("randomize $randomize");
+  if (!defined(@{ $Apache::response::foilgroup{'names'} })) {return;}
   my @names = @{ $Apache::response::foilgroup{'names'} };
   my @whichopt =();
   my (%top,@toplist,%bottom,@bottomlist);
@@ -294,6 +295,7 @@ sub whichfoils {
 
 sub displayanswers {
   my ($max,$randomize,@opt)=@_;
+  if (!defined(@{ $Apache::response::foilgroup{'names'} })) {return;}
   my @names = @{ $Apache::response::foilgroup{'names'} };
   my @whichopt = &whichfoils($max,$randomize);
   my $result=&Apache::response::answer_header('optionresponse');
@@ -307,6 +309,7 @@ sub displayanswers {
 
 sub displayfoils {
   my ($target,$max,$randomize,@opt)=@_;
+  if (!defined(@{ $Apache::response::foilgroup{'names'} })) {return;}
   my @names = @{ $Apache::response::foilgroup{'names'} };
   my @truelist;
   my @falselist;