If you have added the smarty tag to your smarty template and all it displays is the TAG itself 
please follow these instructions to activate in your smarty templates.

"Most likely you need to "attach" the addon tag to the template, so
that the page knows to load whatever is needed.  For that template,
the attachments file would be
"attachments/modules_to_template/basic_page_template_1_lang1_25.tpl.php
- just open up that file and the in-line PHP comments should help you,
there will be a section on that file specific for adding addon tag
attachments.  To help you get started, based on the tag you specified,
you would need to add a line similar to the one below:

$return ['addons'] ['geo_modules'] ['GeoModules_SEO_Module']
['display_meta_header'] = 'display_meta_header';"


===Additional Info===
You can place the
(!addon.geo_modules.GeoModules_SEO_Module.display_meta_header!) tag
inside, say the BASIC PAGE TEMPLATE - 1 or which ever template you are
using that corresponds, then export your files, then copy {addon
author='geo_modules' addon='GeoModules_SEO_Module'
tag='display_meta_header'} from the DEFAULT templates into the USER's
created smarty template(s).


nformation===