XL97: Error Rolling Wheel on Mouse While Editing Formula

• Microsoft Excel 97 for Windows
• Microsoft IntelliMouse

SYMPTOMS

When you roll the wheel on a Microsoft IntelliMouse while using Microsoft Excel 97, you may receive the following error message:

   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 MSO97.DLL at
   0137:307333ca.

CAUSE

This problem occurs if the following conditions are true:

• The worksheet you are currently editing (Sheet1, for example) contains a split or frozen panes.

      -and-
  

• While you are editing a formula in Sheet1, you activate another workbook or another worksheet, and then scroll up or down by rolling the wheel on the Microsoft IntelliMouse.

RESOLUTION

To prevent this problem from occurring, do not roll the wheel on the Microsoft IntelliMouse when you are editing a formula in a workbook whose window contains a split or frozen panes.

STATUS

Microsoft has confirmed this to be a problem in the Microsoft products listed at the beginning of this article. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.