I have recently become responsible for a large site that uses dreamweaver templates in places. This week I've been asked to make some minor changes that require a change in the template. When I updated the pages however 4 out of 5 failed to update. Now everytime I try updating from this template I recieve this error message:

Template File
<file directory/name.dwt> is nested inside itself (directly or indirectly).

Assume I know nothing about templates! What could cause this error?

I can paste in the code if it'll help.