[Freeswitch-users] mod_unimrcp with Nuance "Timed out waiting for channel to be ready"

I'm using mod_unimrcp module with the Nuance Speech Server 5.1 and I'm getting the "Timed out waiting for channel to be ready" when trying to use TTS. This is using MRCP v2 and FS trunk rev 17126. I've not used MRCP and I am stuck. Any suggestions? Thanks Adam