I'm new to, but loving playing with org-mode.  Thanks for this excellent
code!

I followed the directions for checking out the latest version with git, so
have been trying to catch up to the new configuration for babel, at the same
time that I'm learning the ropes of org-mode.

I am finding that babel will not work unless org-babel-tangle-lang-exts is
set -- else I get the following error:

"Symbol's value as variable is void: org-babel-tangle-lang-exts"

Adding "(setq org-babel-tangle-lang-exts '("fortran" . "f"))" to my .emacs
file (even though I'm not using fortran for anything) fixes this problem.

Also, I'm trying to get syntax highlighting of source code elements in HTML
export.  Export looks great, but the code snippets are being exported inside
<pre class="example"> tags, without any other markup.  Can anyone point me
in the right direction?

Cheers,

Nik Putnam