I'm following you out the door.
Interesting to see these threads full of fan boys who are blaming Apple for "breaking" the code that worked in beta. Do they know for a fact that Line 6's code conformed to Apple's standards? And how do they explain that other vendors' drivers are working with the production release of El Capitan?
No I think this is more a case of sloppy project management by Line 6, and limited resources directed toward producing other products.
Sorry if I'm not a fan boy.