[O] possible bug in ox-odt.el?

[Matt Price]

Hello,

for some time I've noticed that the export to odt options were not
being offered in the export menu options (C-c E-c), even though I have
(require ox-odt) in my startup file.  Attempts to evaluate ox-odt
manually failed with this error:

defconst: Wrong type argument: stringp, nil

I've tracked the problem down to org-odt-lib-dir:

(defconst org-odt-lib-dir
  (file-name-directory load-file-name)
  "Location of ODT exporter.
Use this to infer values of `org-odt-styles-dir' and
`org-odt-schema-dir'.")


from what I can tell, 'load-file-name' appears to be nil.  Replacing

  (file-name-directory load-file-name)

with a string like:

  "/home/matt/src/org-mode/lisp/ox-odt.el"

fixes the problem for me, but that doesn't seem like a very robust
solution.  I don't understand emacs internals very well, but is this
possibly a bug in ox-odt.el, or more likely something in my own
(poorly maintained) setup files?

Thanks,

Matt