okay have you checkeed your swfs are correct have you checked your emu config correct there are tutorials on this that will help you fix it have you opened the port o your firewall look at tutorials on here first before posting help
SWF's probably, could be a number of different things though. Habbo.SWF might be wrong for the revision, client.php could be wrong, the general setup could be wrong, ports, etc. Can you post us a few of your setup files?
client.php
external_variables
external_override_variables
config.php (EMU and your CMS)
Have you opened the ports in the firewall settings?