[John H]

Some software synths only work on a stereo channel.

try this :

Open OMS, double click on the IAC Bus icon, tab down the list to the next blank name field after the one named IAC Bus #1, that's what it's named as by default anyway. Name the new one "Absynth"

Close OMS.

Open Absynth, choose "Absynth" as the midi sync.

Open protools.

Create a new session or add the following to a current one...

Create a stereo Aux Track

Create a Midi Track, point the midi track to Absynth in the list and select the midi channel you want to work with.

On the aux track, add the Absynth direct-connect plug-in on insert 'a', the top one, I'm being a bit obvious here but you might want to add effects later on.

It should work if it's like other software synths I've tried. If you then want to record the output of the Aux track, add a bus like you'd normally do and send the output of the track to a stereo audio track.

Hope this helps.