At the beginning I hosted my hotel on localhost, but when I chosed to go public, this problem occured.
1. Check your webbuild, you can find the latest on habbo.com
2. Make sure that it goes to IP/client when you click the 'Enter Hotel' button. Mine just went to localhost/client when I actully
hosted it on my IP... This really frustrated me for an hour.
3. Check every config file extremely careful, any misspell can screw it up.
may not be connecting to the server, hangs before disconnecting.
may not have proper external variables or swf versions.
like suggested, check your configs for proper port assignments. one or more in cms, one on server.