[AUCTeX] file mode specification error

[Peter Rayner]

I'm getting this when trying to access a latex document.
I'm using emacs 22.050 out of the cvs and auctex 11.83.I have the
following in my .emacs 
 (load "auctex.el" nil nil t); notify if loaded ...  it is loaded 
(setq TeX-auto-save t)
(setq TeX-parse-self t)

A traceback from turning on debug-on-error and running find-file on a
latex source file looks like  

Debugger entered--Lisp error: (void-function tex-mode)
  tex-mode()
  set-auto-mode-0(tex-mode nil)
  set-auto-mode()
  normal-mode(t)
  after-find-file(nil t)
  find-file-noselect-1(#<buffer 0.1.tex> "~/writeups/rayner06/0.1/0.1.tex" nil 
nil "~/writeups/rayner06/0.1/0.1.tex" (147536 774))
  find-file-noselect("~/writeups/rayner06/0.1/0.1.tex" nil nil t)
  ad-Orig-find-file("~/writeups/rayner06/0.1/0.1.tex" t)
  find-file("~/writeups/rayner06/0.1/0.1.tex" t)
  call-interactively(find-file)

I guess I've messed up the instalation or activation process somewhere
but I note that things like  tex-mode don't seem to be defined.
Anyone have a clue what I've done?
thanks in advance
Peter

-- 
Peter Rayner: LSCE/IPSL, Laboratoire CEA-CNRS-UVSQ
address: Bat. 701 LSCE - CEA de Saclay
Orme des Merisiers, 91191 Gif/Yvette
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