Chat

I am testing the Chat room before making it available to our Moodle users..
(our site is hostedby our ISP ...)

I open a chat session with user1 in one browser (Safari)
the first chat window opens OK

I open another chat session with another user2 with another browser (Omniweb)... the chat window opens, but the Omniweb browser displays a 404 Not found error ... trying to reach : http://ww.ourmoodlesite.com/mod/chat/gui_header_js/text/html

there is no 'text' folder at this place....
is the problem coming from me using the same IP client address ?