ID: Q167958
The information in this article applies to:
When you type or insert a symbol in Microsoft Equation Editor version 3.0, you may receive the following, or similar, error message:
   This program has performed an illegal operation and will be shutdown.
   If the problem persists, contact the program vendor.
When you click Details, you receive the following error message:
   EQUATION caused an invalid page fault in module EQNEDT32.EXE at
   <address>.
The font specifications are missing from the Equation Editor style definitions.
To specify the fonts for the Equation Editor to use, follow these steps:
1. On the Insert menu, click Object.
2. On the Create New tab, under Object type, click Microsoft Equation 3.0
   and then click OK.
3. Do not type any characters. On the Style menu, click Define.
4. Enter font names for all the styles. The defaults are listed in the
   following table.
   Style           Font             Character Format
   --------------------------------------------------
   Text            TimesNewRoman
   Function        TimesNewRoman
   Variable        TimesNewRoman    Italic
   L.C. Greek      Symbol           Italic
   U.C. Greek      Symbol
   Symbol          Symbol
   Matrix-Vector   TimesNewRoman    Bold
   Number          TimesNewRoman
Microsoft is researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.
Additional query words: 8.0 8.00 gpf ipf crash hang
Keywords          : winword word97 
Version           : WINDOWS:97
Platform          : WINDOWS
Issue type        : kbprb
Last Reviewed: December 18, 1998