A family of Microsoft word processing software products for creating web, email, and print documents.
Press Alt+F9 to toggle the field codes. Then inspect the Seq fields for the table captions. Make sure they say "SEQ Table".
The \c switch in the TOC code builds a table of figures for the given SEQ identifier.
(The explanation in the Field dialog for the \c switch says for the given [caption] label, but that is wrong.)
Another possibility:
If your tables TOC is looking for a particular paragraph style, make sure the right style has been applied to the table captions.