Think I have traced the issue. I downloaded the latest version of shoutbox from theme forest and compared with the dialog.php Kriesi put up in another thread earlier...
I can see the two dialog.php files vary on these lines...
(DOWNLOADED FROM THEMEFOREST)
<script type="text/javascript" src="<?php echo AVIA_PHP_URL."avia_shortcodes/tinymce/js/column-control.js";?>"></script>
<script type="text/javascript" src="<?php echo AVIA_PHP_URL."avia_shortcodes/tinymce/js/tab-control.js";?>"></script>
<script type="text/javascript" src="<?php echo AVIA_PHP_URL."avia_shortcodes/tinymce/js/table-control.js";?>"></script>
(http://dl.dropbox.com/u/2025095/dialog.php.zip)
<script type="text/javascript" src="<?php echo AVIA_PHP_URL."avia_shortcodes/tinymce/js/column-control.js";?>"></script>
<script type="text/javascript" src="<?php echo AVIA_PHP_URL."avia_shortcodes/tinymce/js/tab-control.js";?>"></script>
When I use the above dialog.php code (http://dl.dropbox.com/u/2025095/dialog.php.zip) it all works, when I use (theme forest) preview doesn't work.
I MUST POINT OUT...
I am using Shoutbox, but obviously the code (http://dl.dropbox.com/u/2025095/dialog.php.zip) is meant for Abundance theme. Is there any problem using it on shoutbox???