tramp proxies-alist not working for me

[George Nurser]

Hi,
I have Aquamacs 1.7 installed on a MBP running 10.5.6. I downloaded
and installed tramp 2.1.15 following the instrauctions at
http://samrandomness.blogspot.com/2008/10/aquamacs-15-and-tramp-2114.html

viz.
cd tramp-2.1.15
 ./configure --with-contrib
make
cp lisp/* ~/Library/Application\ Support/Aquamacs\ Emacs/site-lisp/
--all of this seemed OK.

To ssh into  our work computers e.g. nozzle.aaa.bbb.ccc.uk we need
first to ssh into the gateway charon.aaa.bbb.ccc.uk:

ssh charon.aaa.bbb.ccc.uk

and then either

ssh nozzle

or ssh nozzle.aaa.bbb.ccc.uk

I have set up ssh from the MBP and between charon and nozzle such that
I do not need a password.



Following the TRAMP 2.1.5 manual I then added to my
~/Library/Preferences/Aquamacs\ Emacs/Preferences.el

(add-to-list 'tramp-default-proxies-alist
                  '("\\." nil "/ssh:charon.aaa.bbb.ccc.uk:"))
(add-to-list 'tramp-default-proxies-alist
                  '("\\.aaa\\.bbb\\.ccc\\.uk" nil nil))

[Actually there seems to be a typo in the manual -- it has an extra
single quote after uk:  '("\\.aaa\\.bbb\\.ccc\\.uk'" nil nil))]



Unfortunately, then doing
/ssh:nozzle.aaa.bbb.ccc.uk:~

produces a process that dies. The *Messages* buffer gives:

Tramp: Opening connection for nozzle.aaa.bbb.ccc.uk using ssh...
Tramp: Waiting 60s for local shell to come up...
Tramp: Sending command `ssh nozzle.aaa.bbb.ccc.uk   -q -e none && exit || exit'
Tramp: Waiting for prompts from remote shell [2 times]
File error: Process died
tramp-error: Process died

What have I missed?

--George Nurser.