Sorry but this is a warning for admins and people trying to run and configure kune. This causes the problem reported because chat client configuration is not the same that server configuration, so, chat will fail.
Error in Kune client:
Your http domain (127.0.0.1) is different from the chat domain (localhost). This will cause problems with the chat functionality. Please check kune.properties on the server.
I guess that this is wrong, as localhost and 127.0.0.1 is the same. Thus, this error should not be reported.