This error was reported in FogBugz but Kiln seems to be working and integrated OK.
Error in plugin Kiln - Kiln is not responding.
10/8/2009 5:45 PM (GMT+01:00): Kiln integration will be disabled until FogBugz is able to talk to Kiln. Please check your Kiln installation to make sure it is responding and, if not, contact your Kiln administrator.
Maybe it's not working as just been acknowledged of error again:
10/8/2009 10:33 PM (GMT+01:00): Kiln integration will be disabled until FogBugz is able to talk to Kiln. Please check your Kiln installation to make sure it is responding and, if not, contact your Kiln administrator.