I just spend a good half hour tracking this down.  It looks like this, in
org-mode is killing me.  It look wrong to me, but I'm not an expert:
    (set-display-table-slot
     org-display-table 4
     (vconcat (mapcar
       (lambda (c) (make-glyph-code c (and (not (stringp org-ellipsis))
   org-ellipsis)))
       (if (stringp org-ellipsis) org-ellipsis "..."))))

Why are we making a glyph-code out of an ellipsis?  We end up with a
strange-looking display-table.

On 11/6/07, Andrew Hyatt <andrew_hyatt@yahoo.com> wrote:
>
> I seem to have an issue where I will be using emacs for a while, and
> eventually something happens which will corrupt all org buffers, and make
> them unviewable (the buffer refuses to display, but otherwise does not
> affect the rest of my emacs session).  The error I get is
> "line-move-partial: Invalid face".  I can switch to text-mode and see it
> normally.
>
> I'm using emacs version 23.0.0.1.  I'm using org-mode version  5.13a.
>  This seemed to coincide to my upgrade from org-mode version 4 to 5.13a.
>  This happens on both terminal and x-windows versions of emacs.
>
>
> Has anyone experienced this issue before?  Any ideas on how to solve it?
>