I also stumbled into errors closing Word and the same problem of multiple mail merge in the Tools drop down menu and found the solution. It is an easy to fix bug in Word toolbars and the normal.dot file.

First off, make sure normal.dot exists on your computer at the default install location. Sometimes it has been deleted or write-protected.

Second, in Microsoft Word, click on View > Toolbars > Customize. Highlight each toolbar and click reset.

Exit and restart Word and all is well in the world.

Article Last Modified on 7/31/2001

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The information in this article applies to:

Microsoft Works Suite 2000
Microsoft Works Suite 2001
Microsoft Word 2000

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This article was previously published under Q255957
SYMPTOMS
When you attempt to open a document that is located in the root folder of a hard disk or floppy disk in Microsoft Word 2000, you may receive the following error message:
Winword caused an invalid page fault in module Wkwdaddn.dll.
CAUSE
This behavior can occur if the Microsoft Works Word Add-In included with Microsoft Works Suite is installed on your computer.
WORKAROUND
To work around this issue:
If the document is stored on a hard disk, move the document to the My Documents folder before you open the document.
If the document is stored on a floppy disk, create a new folder on the floppy disk, and then move the document into the new folder before you open the document.