I've followed the instructions here http://forum.bytesforall.com/showthr...header+section

and placed two widgets in the header. I want to run Featured Content Gallery in the right side widget.

I installed the 'Executable PHP widget' plugin and put that in the RH widget and pasted in the PHP code for the gallery

<?php include (ABSPATH . '/wp-content/plugins/featured-content-gallery/gallery.php'); ?>

The gallery shows up black with a loading bar but won't progress to the slideshow.

If I paste the PHP code into Header.php the slideshow works fine but it is on the lefthand side.

I guess if I put it into a div and add a class for right align I could do it that way, but I would like to know if there is a better way ?

My test site is at http://test.robhealey.com.au

Have you tried any other plugins such as the Linkable Title Html and Php Widget to see if it is widget related. Another I have used is the Advanced Text Widget but that is a bit older.