An URL to your chat’s web page would help.
You probably have a space in the room’s name or have placed a quote in which breaks the javascript. I believe this is noted as things not to do in the “Tips” section of the code generation page. People that create rooms with names such as “Dave’s Room” have problems because of the single quote in the name. You can escape quotes with a back slash. The name “Dave\’s Room” will work correctly.
Check the names used in your room code. Make sure there are no spaces in the room name. Make sure there are no quotes in the room name and title of the room.
Hope that helps.
Nothing rhymes with Cindy Crawford after 9 coronas...