[O] preview latex fragment with latex_header

[Andreas Leha]

Hi all,

I have a beamer presentation in org-mode that contains a line like
#+LaTeX_HEADER: \subtitle{foo}

This prevents me from using 'org-preview-latex-fragment' as that one --
naturally, as it uses the article class -- fails with
'Failed to create dvi file from /tmp/orgtex49760oq.tex'
due to

,----
| ERROR: Undefined control sequence.
| 
| --- TeX said ---
| l.38 \subtitle
`----

What's the remedy here?

Thanks in advance!

Regards,
Andreas