Whilst I understand it should be common sense not to upgrade your OS before you know that everything works on it, I can also understand the frustration that isn't helped by Line 6 doing this every year or with any similar situation. I own a UX1, but I have installed El Capitan knowing that I'm going to buy a Boss GT-001 so I'm not in any urgent need to use POD Farm, but it is frustrating to see that their product flat out does not work and they have yet to update us on any progress. The last update on the situation was a while back now and it would be nice to at least know the team is working on it.
It's hard to take Line 6 as a serious company when they drop the ball on almost every product under Â£300. I get that it takes a while to figure out the problem, test the solution and send it out, but the beta has been out for testers and developers for months to see if there would be any future problems. Clearly Line 6 has dropped the ball here and they've done more than let down their customers, there's people actually ditching the product. The very least they could do is let us know they're working on it.