www.makemkv.com

I have a Mac, BU50N (firmware 1.01 I believe, I don't have it with me) and around 25 4K disks. If there are any beta testing opportunities for this feature/drive support, I'd be more than happy to help. :) Did you have to flash downgrade the firmware on your drive to get it to recognize 4K discs? I...

I'm running into the same problem but the software usually manages to work through it.
I'm having a particular problem with RED 2 where it simply stops at a certain point.

I am considering beginning to test the beta of Mac OS 10.11, but wanted to find out if MKV has been tested against it first?