Using Windows Explorer:
- In Tools > Folder Options > View, select "Show hidden folders and files".
- Locate the folder
C:\Documents and Settings\<your name>\Application
Data\Microsoft\Word\STARTUP
- Is a folder named ~$cument present there? If so, it's highly unusual,
because the ~$ prefix is a "temporary file" marker.
- Delete the file Factory.dot from the ~$cument folder. If it's now empty,
also delete the ~$cument folder itself.
- Restart Word to see if the message stops.
If you can identify which third-party software is responsible for the
add-in, you can try reinstalling or repairing that software.

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Regards,
Jay Freedman
Microsoft Word MVP FAQ: http://word.mvps.org
Email cannot be acknowledged; please post all follow-ups to the newsgroup so
all may benefit.
> When I start Microsoft Word, I get a window which says: The add-in
> template is not valid. (C:\...\STARTUP\~$cument\Factory.dot)
>
> How can I eliminate this pop-up window?
bob1122 - 31 Mar 2006 17:53 GMT
Thanks very much! That solved the problem.
> Using Windows Explorer:
>
[quoted text clipped - 15 lines]
> >
> > How can I eliminate this pop-up window?