Emaxima not making TeX output for cell



I've just started using emaxima, and can't get it to make TeX output
for my cells. For example, if I create a cell (C-c C-o), write in
an equation

  \beginmaxima
  d = v_0*t - mu*g/2*t^t;
  \endmaxima

and then ask for a TeX update of the cell (C-c C-u C), I get

  \beginmaxima
  d = v_0*t - mu*g/2*t^t;
  \maximaoutput
						  t
					    g MU t
     			        d = t v_0 - -------
					       2
  \endmaxima

which is the same as what I get when I ask for a regular update of
the cell. Asking for a TeX update of all the cells also gives the
same result.

As for versions, I'm using the 5.9.0-1 maxima rpms along with clisp
2.29-1 and GNU emacs 21.2-2. My .emacs currently has these lines

  (setq emaxima-use-tex 'tex)
  (autoload 'emaxima-mode "emaxima" "EMaxima" t)
  (add-hook 'emaxima-mode-hook 'emaxima-mark-file-as-emaxima)

so I'm using the standard TeX mode. But the same thing happened when
I was using AucTex.

I suspect I'm missing something very elementary, but I can't find
anything in the documentation or in the archives. If you have any
suggestions, please reply to me directly as well as to the list, as I
am an archive-only subscriber.

-- 
Mark Lawrence
www.unified-eng.com