Yes, I start RB and I can play the GM files file. Then I can try the XG file and no output. Go back to the GM file without restarting RB and the GM file plays fine.

Yes, Media Player AND Reaper are using the system driver and have the same USB interface to MIDI selected. That's the same driver and device that is selected when attempting to play the XG file in RB. So that is what is the puzzlement.

I had looked at the tracks with the Event List and didn't spot anything strange, and for one test I removed all controls except for volume from the soloed Bass track and still nothing.

And as mentioned I had removed the SysEx messages to test but that didn't make and difference. The first SysEx is a GM reset and the others are likely XG related. So I thought maybe removing them would fix it but that didn't do it.

The XGs are from MidiTracks.uk so I can't really upload them. I'll have to dissect them some more to see if I can spot the culprit. Since Mediaplayer and Reaper both play the XG files OK it has to be something that RB is interpreting in the file that I'm not seeing right now.

I tried the XG .mid file in the following message and it DOES play in my RB installation so that tells me that it is something in the XG files from MidiTracks.uk which at least narrows things down a bit.

Thanks,
Burt