That is a good catch John, but I checked that.

The one thing I just can't let go of is that nothing is amiss until I connect that second box. Switching them where 1 is 2 and 2 is 1..... changing ports on the card...... no matter what combination of variables I have, as soon as I hit play, I get that exact memory address access violation error. It if was a bitrate mismatch, troubleshooting logic says it would not work correctly with one or two connected. I don't change the bitrate when I connect the second unit.

I decided today I am going to build another computer and see what happens. I can always use another PC....