Thank you Bastien: you were right: one of my previous settings was the problem: the use as the default font of TeX Gyre Termes which so far I had not yet installed on this computer with Mountain Lion.<div>Sorry for asking for help because of this stupid mistake. </div>
<div><br></div><div>So far I find only this other problem in using Org Mode on Mountain Lion: on the previous computer with Lion when using Org mode I was able to display in a buffer a .png image when I clicked on an hyperlink in an Org mode file which pointed to this type of file. </div>

<div><br></div><div>Now If I do the same this message is displayed:</div><div><br></div><div>Cannot display image: (Cannot determine image type)</div><div><br></div><div>(by the way: the hyperlink to the file is correct and in fact when I export the Org file to LibreOffice the .png image is rightly displayed).</div>
<div><br></div><div>In my Emacs settings the option Image File Name Extensions</div>
<div>contains a list of extensions among which the .png </div><div><br></div><div>and Auto Image File Mode is set on </div><div><br></div><div>So any idea what is the right configuration for displaying in a buffer a .png image when using Org mode?</div>

<div><br></div><div>Pierfranco<br><br><div class="gmail_quote">2012/8/24 Bastien <span dir="ltr">&lt;<a href="mailto:bzg@altern.org" target="_blank">bzg@altern.org</a>&gt;</span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">

<div>Hi Pierfranco,<br>
<br>
Pierfranco Minsenti &lt;<a href="mailto:pierfranco.minsenti@gmail.com" target="_blank">pierfranco.minsenti@gmail.com</a>&gt; writes:<br>
<br>
</div><div>&gt; What should I do to check which version of Emacs is charged when I<br>
&gt; use the Terminal application?<br>
<br>
</div>M-x emacs-version RET<br>
M-x org-version RET<br>
<br>
I&#39;m not a Mac user, but I&#39;m pretty sure ~$ emacs from the Terminal<br>
is *not* linked to the Aquamacs executable.<br>
<br>
I don&#39;t know what is the equivalent to &quot;~$ emacs -Q&quot; for launching<br>
a bare Aquamacs instance, but maybe for now just remove any .emacs.el<br>
and see if the problem comes from your configuration?<br>
<span><font color="#888888"><br>
--<br>
 Bastien<br>
</font></span></blockquote></div><br></div>