# multicol package

I am trying to set up a book (8"x10" - about 400 pages) with mostly 2 columns.
I want the chapter titles and section headings to go across the page with the
body text in 2 columsn.

I have set it up as follows:

Chapter Title
\begin{multicols}{2}

(body text)

\end{multicols}

or

\begin{multicols}{2}

(body text)
\end{multicols}

It seems to work OK until I'm about half way through the book, then when I try
to view using DVI or PDF, I get an error message "Dimension too large."

Is there a limit as to how many times you can changee from one to two columns?
Is there a limit to how many words this setup can handle? Any help would be
appreciated.