Error When Macro Closes Its Own Workbook

SYMPTOMS

In Microsoft Excel, if a Microsoft Visual Basic for Applications procedure is started by an OnSheetDeactivate command and the procedure then closes the workbook in which it is contained, one of the following may occur:

• In Microsoft Excel 97, you receive an illegal operation error.
• In Microsoft Excel for Windows, you receive a general protection (GP) fault.
• In Microsoft Excel for the Macintosh, you receive the following error message:
  The application "Microsoft Excel" has unexpectedly quit, because an error of type 1 occurred.