Mc,

I got it to work, but ran into the same problem you did.

I was able to fix it by doing a couple of things.

I created my own midi out preset, so I could make sure what I wanted to go out would go out, I found that you need to turn PC change off because when you go back to the arranger functions it ends up sending commands that end up changing stuff on the SD2.

And it's always good to put in the begining of every midi file a GM/GS reset command