Very strange Midi problem in Live 8.

[deixis]

Very strange Midi problem in Live 8.
This is driving me nuts.

The problem is that it appears that Live 8 is not sending midi to my external gear. So for example if I play my master keyboard or any other synths I can record the midi notes but they don't playback.
I know its not an audio problem because I can hear the hardware when I press the keys but when I record the midi notes the data doesn't seem to be getting back to the hardware. Its almost as if my 'midi send' has stopped communicating to my external gear.

I've checked as much as I can think of which includes, trying 3 different midi interfaces, trying different midi cables, running applejack, restarting, checking the Live prefs, checking the OSX Audio Midi Setup and trying different synths.

Is there some sort of midi send/playback setting in Live or could it be a screwed up preference or driver?

I have also noticed that the "Midi Track Out Indicator" is flashing when the midi notes are playing and the audio channel monitor is set to AUTO.

Anyone had this problem or know anything else I should check? I've been using my gear trouble free with Live 8 for ages so no idea why its suddenly thrown this at me.

OS 10.6.8, Live 8.2.2, MOTU 808 mk3, MOTU Micro Lite x 2

[deixis]

Thanks for the reply, yes that was all set correctly but it turned out to be a corrupt preference file for the OSX "Audio Midi Setup". Once I reinstalled the MOTU midi driver, run a disk permissions and binned the "com.apple.MIDI.plist" file it sorted it's self out. Watch out for that one, took a lot of head scratching!