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Did you try cleaning the disc?

Just in case anyone runs into a problem like this, plug your drive into your computer directly and not into your fancy 5K monitor. When I switch the cable directly to the back of my Mac mini all of the errors went away. Oops.

Yep. The second disk is over 66 GB and is a triple layer. It can be read just fine. I have both rips from it in front of me.

It still doesn’t work. Is the other 4K disc in this set also a bd100? Because it can be read just fine.

I've cleaned the disc and am trying it again. I've done other 4K rips after trying this one and they worked perfectly.

I'm getting the above error on the 4K version of Apocalypse Now The Final Cut. I can rip the original and Redux versions in 4K just fine and rip the HD version of The Final Cut as well. My drive is brand new and works great, so I don't think it's failing.

Any advice?