I am trying to write the table of contents for my dissertation, but when I
try to use the Insert-Index-Table of Contents thing, as the tutorial
describes, I get this error every time, regardless of how much I try and
manipulate my text.

Error! No table of contents entries found.

I don't understand what would be causing this. Any ideas? It works when I
type in gibberish, but when I type in my table of contents information, it
gets me everytime.
Thanks