--- loncom/interface/lonprintout.pm	2010/05/22 01:07:47	1.576
+++ loncom/interface/lonprintout.pm	2010/05/24 09:21:18	1.577
@@ -2,7 +2,7 @@
 # The LearningOnline Network
 # Printout
 #
-# $Id: lonprintout.pm,v 1.576 2010/05/22 01:07:47 raeburn Exp $
+# $Id: lonprintout.pm,v 1.577 2010/05/24 09:21:18 foxr Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -228,6 +228,8 @@ sub generate_code_selector {
 	      !\$helper->{'VARS'}{'CODE_SELECTED_FROM_LIST'}) {
 	      return &Apache::lonprintout::is_code_valid(\$helper->{'VARS'}{'SINGLE_CODE'},
 						      \$helper->{'VARS'}{'CODE_OPTION'});
+	  } elsif (\$helper->{'VARS'}{'SINGLE_CODE'} ne ''){
+	      return 'Specifying a code name is incompatible with what you have specified above';
 	   } else {
 	       return undef;	# Other forces control us.
 	   }
@@ -3754,6 +3756,8 @@ CHOOSE_STUDENTS1
 	      !\$helper->{'VARS'}{'CODE_SELECTED_FROM_LIST'}) {
 	      return &Apache::lonprintout::is_code_valid(\$helper->{'VARS'}{'SINGLE_CODE'},
 						      \$helper->{'VARS'}{'CODE_OPTION'});
+	  } elsif (\$helper->{'VARS'}{'SINGLE_CODE'} ne ''){
+	      return 'Specifying a code name is incompatible with what you have specified above';
 	   } else {
 	       return undef;	# Other forces control us.
 	   }