The Yamaha AN1x Synthesizer mailing list

I'm on a G4/400 OMS 2.3.8 AN1X editor 1.1 G-port w/Midi 
Timepiece II
OMS and the MTP see the AN1X just fine. when I test the device 
in OMS setup I hear sound. Further, when I play the AN1X  I get 
signal to my MTP. But when I try to send a patch or a bank-or try 
to receive a patch or a bank I get the "receive error" dialog box.
I checked the midi device # in OMS and the AN1X, that all sems 
right. There doesn't seem to be any "write protect" type setting on 
the synth. I'm out of ideas. Can anyone help???