XTouch-One's manual says to use it with the standard Live MackieControl script, but it only supports eight tracks. Fortunately, I found a custom one on a forum that solves it, but one mind boggling trouble remains : when navigating in Arrangement View (jogwheel or arrows), the playhead (green right arrow) doesn't move, only the light-blue down arrow. So I can't use it without the mouse.

I've heard about about on a forum, and from what I understood, you can solve this problem for other controllers, and I'd buy more than interested if one your scripts worked on mine.

Cheers !