--- loncom/xml/run.pm	2006/01/11 08:56:13	1.56
+++ loncom/xml/run.pm	2006/02/20 23:52:20	1.57
@@ -1,6 +1,6 @@
 package Apache::run;
 #
-# $Id: run.pm,v 1.56 2006/01/11 08:56:13 albertel Exp $
+# $Id: run.pm,v 1.57 2006/02/20 23:52:20 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -140,8 +140,10 @@ sub run {
 	if ($innererror=~/line (\d+)/) {
 	    my $linenumber=$1;
 	    my @code=split("\n",$code);
-	    $code[$linenumber-1]='<b><font color="red">'.
-		$code[$linenumber-1].'</font></b>';
+	    if ($linenumber < scalar(@code)) {
+		$code[$linenumber-1]='<b><font color="red">'.
+		    $code[$linenumber-1].'</font></b>';
+	    }
 	    $code=join("\n",@code);
 	}
 	&Apache::lonxml::error($errormsg.$code.'</pre>');