--- loncom/interface/statistics/lonstudentassessment.pm	2004/01/27 19:50:03	1.82
+++ loncom/interface/statistics/lonstudentassessment.pm	2004/02/06 19:29:00	1.83
@@ -1,6 +1,6 @@
 # The LearningOnline Network with CAPA
 #
-# $Id: lonstudentassessment.pm,v 1.82 2004/01/27 19:50:03 matthew Exp $
+# $Id: lonstudentassessment.pm,v 1.83 2004/02/06 19:29:00 matthew Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -1035,11 +1035,16 @@ END
                 $seq->{'Excel:endcell'} = $seq->{'Excel:startcell'};
                 $seq->{'Excel:endcol'}  = $seq->{'Excel:startcol'};
             } else {
-                &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
-                    ($rows_output,$cols_output-1);
+                $seq->{'Excel:endcell'} = 
+                    &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
+                        ($rows_output,$cols_output-1);
                 $seq->{'Excel:endcol'} = $cols_output-1;
             }
             # Create the formula for summing up this sequence
+            if (! exists($seq->{'Excel:endcell'}) ||
+                ! defined($seq->{'Excel:endcell'})) {
+                $seq->{'Excel:endcell'} = $seq->{'Excel:startcell'};
+            }
             $seq->{'Excel:sum'}= $excel_sheet->store_formula
                                         ('=SUM('.$seq->{'Excel:startcell'}.
                                              ':'.$seq->{'Excel:endcell'}.')');