Error When Macro Closes Its Own Workbook

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.

This behavior occurs only if a sheet is deleted by clicking Delete Sheet on the Edit menu or from the Sheet Tabs shortcut menu; it does not occur if a sheet is deactivated by switching to another sheet.

Microsoft has confirmed this to be a problem in the Microsoft products listed at the beginning of this article.