XL97: Illegal Operation Occurs While Recalculating Workbook

• Microsoft Excel 97 for Windows

SYMPTOMS

When you recalculate the formulas in a workbook, the status bar displays "Calculating 0%," and Microsoft Excel 97 appears to stop responding (hang). If you force the workbook to be recalculated by pressing F9 or CTRL+ALT+F9, the following error message appears:

   Microsoft Excel cannot calculate a formula. There is a
   circular reference in an open workbook, but the references
   that cause it cannot be listed for you. Try editing the
   last formula you entered or removing it with the undo command
   (Edit menu).

   This program has performed an illegal operation and will be shut down.
   If the problem persists, contact the program vendor.

   EXCEL caused an invalid page fault in module EXCEL.EXE at
   0137:301ebf39.

CAUSE

This problem occurs when you do the following:

• You open a workbook created in Microsoft Excel version 5.0 or 7.0.

      -and-
  

• The workbook contains user-defined (custom) functions.

      -and-
  

• You force the workbook to be recalculated by pressing the keys CTRL+ALT+F9.

RESOLUTION

To correct this problem, install Microsoft Excel 97 Service Release 1 (SR-1).

STATUS

Microsoft has confirmed this to be a problem in Microsoft Excel 97 for Windows. This problem was corrected in Microsoft Excel SR-1.

For additional information about SR-1, please see the following article in the Microsoft Knowledge Base:

   ARTICLE-ID: Q172475
   TITLE     : OFF97: How to Obtain and Install MS Office 97 SR-1