[Orgmode] Problems Compiling 6.02b

[Ian Barton]

This is strange. I have various computers running Ubuntu Hardy and 6.02b 
has installed fine on all of them except one. I get the following error 
when compiling:

Loading 00debian-vars...
No /etc/mailname. Reverting to default...
Loading /etc/emacs/site-start.d/50autoconf.el (source)...
Loading /etc/emacs/site-start.d/50dictionaries-common.el (source)...
Loading debian-ispell...
Loading /var/cache/dictionaries-common/emacsen-ispell-default.el (source)...
Loading /var/cache/dictionaries-common/emacsen-ispell-dicts.el (source)...
Loading /etc/emacs/site-start.d/50emacs-goodies-el.el (source)...
Loading /etc/emacs/site-start.d/50emacspeak.el (source)...
Loading /etc/emacs/site-start.d/50muse-el.el (source)...
Loading /usr/share/emacs22/site-lisp/muse-el/muse-autoloads.el (source)...
Loading /etc/emacs/site-start.d/50psvn.el (source)...
Loading /etc/emacs/site-start.d/51planner-el.el (source)...
Loading /usr/share/emacs22/site-lisp/planner-el/planner-autoloads.el 
(source)...
Loading /etc/emacs/site-start.d/52remember-el.el (source)...
Loading /usr/share/emacs/site-lisp/remember-el/remember-autoloads.el 
(source)...

In toplevel form:
lisp/org-exp.el:31:1:Error: Symbol's value as variable is void: 
add-to-diary-list
make: *** [lisp/org-exp.elc] Error 1

As far as I can tell I have the same packages installed on each computer 
and the relevant section of the Makefile is:

# Where local software is found
prefix=~/emacs

# Where local lisp files go.
lispdir = $(prefix)/org

Ian.