Hi,

Concerning:

    Bastien> Hi George, thanks for reporting this.

    Bastien> Eric Schulte <schulte.eric@gmail.com> writes:

    >> From cf2128fb320f714f78fa54b953405d01fa73bf33 Mon Sep 17 00:00:00
    >> 2001 From: Eric Schulte <eric.schulte@gmx.com> Date: Fri, 28 Dec
    >> 2012 08:20:56 -0700 Subject: [PATCH] Pass the dir option on
    >> through org-export-as-string
    >> 
    >> * lisp/org-exp.el (org-export-string): Pass the dir option on
    >> through to any subsequent export functions.

    Bastien> Applied, thanks!

I waited for a new org-plus-contrib elpa package to try this...  I
installed the new one just now, and

  M-x org-mime-htmlize 

in a message buffer now gives a "Wrong number of arguments" error.

Maybe I've done something boneheaded, but I can't work out what it is...

Here is a backtrace: