Issues with Theme Builder and Composition Plugin

Hi! I'm having some troubles with the Adaptavist Theme Builder and Confluence 3.0.0.01. I'm using th Composition plugin (http://confluence.atlassian.com/display/CONFEXT/Composition+Plugin) as an indication of Attlassian to have an automatic slide show of images in my intranet.
The problem appears when I use the theme builder to put this banner in the Header Panel. As we can see in the image, the images are listed rather than put in a slideshow. In a "normal" page( without builder theme) i'm able to set up a slide show correctly.
Could you, please, help me?

The Content of the Header Panel is:

{composition-setup}
{deck:id=slideshow1|effectType=fade|nextAfter=3|loopCards=true|tabLocation=none}
{card:label=Card 10}
!image1.jpg!
{card}
{card:label=Card 20}
!image2.jpg!
{card}
{deck}

You can see in the picture that the first image is not displayed, however it's ok. (If you alternate the images, it is always the first one in the code which is not displayed)

Any help would be appreciated!!
Cheers,