--- loncom/homework/grades.pm	2004/10/07 22:12:47	1.220
+++ loncom/homework/grades.pm	2004/10/18 19:37:10	1.222
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # The LON-CAPA Grading handler
 #
-# $Id: grades.pm,v 1.220 2004/10/07 22:12:47 albertel Exp $
+# $Id: grades.pm,v 1.222 2004/10/18 19:37:10 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -1411,7 +1411,8 @@ sub submission {
 
     if (!&canview($usec)) {
 	$request->print('<font color="red">Unable to view requested student.('.
-			$uname.$udom.$usec.$ENV{'request.course.id'}.')</font>');
+			$uname.'@'.$udom.' in section '.$usec.' in course id '.
+			$ENV{'request.course.id'}.')</font>');
 	$request->print(&show_grading_menu_form($symb,$url));
 	return;
     }
@@ -4460,7 +4461,8 @@ sub scantron_validate_CODE {
 						 $scan_data);
 	my $CODE=$$scan_record{'scantron.CODE'};
 	my $error=0;
-	if (!exists($allcodes{$CODE}) && !$$scan_record{'scantron.useCODE'}) {
+	if (%allcodes && !exists($allcodes{$CODE}) 
+	    && !$$scan_record{'scantron.useCODE'}) {
 	    &scantron_get_correction($r,$i,$scan_record,
 				     \%scantron_config,
 				     $line,'incorrectCODE',\%allcodes);