Sometimes all you can do is shake your head and laugh. It was frustrating. It seemed no matter what I tried one controller would flash then it would stop even though the Vixen preview showed the lights flashing. Shorter USB runs, moved the unshielded parts of the wires, switched out cables. Tonight while I was standing there watching the screen and the readouts on the controllers, I noticed it. And I double checked my notes. And I switched the com ports on the two controllers and it looks so much better now (sheepish grin). I know there was a problem to begin with and I'll need to resolve it for next year. But for THIS year, it'll work......