I instaled you Frei chat. Instaled chat module, but on my web page I see only empty module (see here: http://www.seimos.eu/freichat.JPG).
Checked all Frei administration point..
Template: http://www.shape5.com/product_details/free_templates/vertex_-_free_joomla_template.html
Work with Joomla 2.5
Frei chat installed in "..Joomla/chat"

Hi,

Please open the developer console(f12) in chrome and check for any errors in the console related to freichat .

Failed to load resource: the server responded with a status of 404 (Not Found) http://...../freichat/client/jquery/freichat_themes/freichatcss.php
Failed to load resource: the server responded with a status of 404 (Not Found) http://...../freichat/client/main.php?id=52726750e5a43397a707320d0cb365f1&xhash=0
Failed to load resource: the server responded with a status of 400 (Bad Request) http://fonts.googleapis.com/css?family=Arial
Uncaught SyntaxError: Unexpected token ILLEGAL control:369
Uncaught TypeError: Cannot call method 'appendChild' of null s5_font_adjuster.js:80
event.returnValue is deprecated. Please use the standard event.preventDefault() instead.

Rename the folder 'chat' back to 'freichat' in your Joomla directory

working
thanks