Hi,
the as3thumbs plugin can't be embedded at the moment,
the way of the parameter passing (...?TheXML=...) can't be used for embedded files,
and the plugin itself won't have access to the thumb images if they were embedded too,
but I will find a way to make it possible of course
at the moment this plugin and it's files (gallery1.xml, thumbs) must be still external,
remove it manually from the embedded file list,
best regards,
Klaus