--- loncom/homework/grades.pm	2004/09/16 17:47:23	1.212
+++ loncom/homework/grades.pm	2004/09/24 21:09:33	1.214
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # The LON-CAPA Grading handler
 #
-# $Id: grades.pm,v 1.212 2004/09/16 17:47:23 albertel Exp $
+# $Id: grades.pm,v 1.214 2004/09/24 21:09:33 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -4480,7 +4480,8 @@ sub scantron_validate_CODE {
 				     $line,'incorrectCODE',\%allcodes);
 	    return(1,$currentphase);
 	}
-	if (exists($usedCODEs{$CODE}) && $ENV{'form.scantron_CODEunique'}
+	if (exists($usedCODEs{$CODE}) 
+	    && $ENV{'form.scantron_CODEunique'} eq 'yes'
 	    && !$$scan_record{'scantron.CODE_ignore_dup'}) {
 	    &scantron_get_correction($r,$i,$scan_record,
 				     \%scantron_config,
@@ -4647,9 +4648,10 @@ SCANTRONFORM
 		$form{'CODE'}=$scan_record->{'scantron.CODE'};
 	    }
 	    my $result=&Apache::lonnet::ssi($resource->src(),%form);
-
+	    if (&Apache::loncommon::connection_aborted($r)) { last; }
 	}
 	$completedstudents{$uname}={'line'=>$line};
+	if (&Apache::loncommon::connection_aborted($r)) { last; }
     } continue {
 	&Apache::lonnet::delenv('form.counter');
 	&Apache::lonnet::delenv('scantron\.');