OK just tried under XBMC.. failed.. log below.. any ideas.
Feb 23 15:00:06 htsp: Got connection from 192.168.1.43
Feb 23 15:00:06 htsp: 192.168.1.43: Welcomed client software: XBMC Media Center
Feb 23 15:00:06 htsp: 192.168.1.43 [ XBMC Media Center ]: Identified as user xbmc
Feb 23 15:00:06 subscription: "192.168.1.43 [ xbmc | XBMC Media Center ]" subscribing on "AXN", weight: 150, adapter: "eth1", network: "", mux: "239.0.0.14", provider: "", service: "", quality: 100
Feb 23 15:00:09 Transport: eth1/239.0.0.14: Status changed to [Graceperiod expired]
Feb 23 15:00:15 Transport: eth1/239.0.0.14: Status changed to [Graceperiod expired]
Feb 23 15:00:16 htsp: 192.168.1.43 [ xbmc | XBMC Media Center ]: Disconnected
Feb 23 15:00:16 subscription: "192.168.1.43 [ xbmc | XBMC Media Center ]" unsubscribing from "AXN"
Feb 23 15:00:16 htsp: 192.168.1.43 [ xbmc | XBMC Media Center ]: Disconnected
Seems it connects ok , but then the Transport Status changes and it disconnects.