'Sleep Has Her House' getting 'DEBUG Code 0' and 'failed to open disc'

[sidetracked]

This is a BD-R produced by the filmmaker and sold on their website.
It plays fine on multiple different drives, including the one I'm trying to use for the back-up.

But when I try to have Make MKV start reading the disc, it shuts down within a second, and the debug log shows:
Using LibreDrive mode (v01.0 id=2D22701B6D8C)
Using direct disc access mode
DEBUG: Code 0 at q||&e6 zKb*Tq,"Z:121267500
DEBUG: Code 0 at q||&e6 zKb*Tq,"Z:121263682
DEBUG: Code 0 at q||&e6 zKb*Tq,"Z:213131341
Failed to open disc

Cleaned the disc a couple of times, tried an older, alternate drive, but nothing. Have copied other discs before and since with no problem.

Because this is a BD-R, so many not last as long I'd love to be able to make a back up, but never seen anything quite like this in many hundreds
of MakeMKV rips.

Any thoughts or suggestions would be most appreciated!!

[dcoke22]

Will MakeMKV create a backup of the disc? On the first screen of MakeMKV, after you've inserted the disc, click the icon of the yellow folder with the green arrow.

[sidetracked]

Hi!

Thanks for the suggestion, it makes sense, but sadly, it didn't work. I just get;
Using LibreDrive mode (v01.0 id=2D22701B6D8C)
Backing up disc into folder "/Users/mishaowl/Movies/backup/SLEEP_HAS_HER_HOUSE"
DEBUG: Code 0 at q||&e6 zKb*Tq,"Z:121267500
DEBUG: Code 0 at q||&e6 zKb*Tq,"Z:121263682
DEBUG: Code 0 at XWR*7^nm}Q!$?b{j;#$:121273319
DEBUG: Code 0 at PN<KE);C4Po8GmYU2S>@:121265338
Backup failed

There's obviously something odd with the disc. I tried making a back-up copy with 'Burn' - which is sort of a much less useful mac variation of imagburn - and I got an ISO -- but it wouldn't open to convert with MakeMKV, nor could it be opened to play by VLC. The only thing that finally did work - sort of - was Handbrake, which I haven't used much. After 7 hours it gave me a playable mp4 copy, but despite setting it for 'Super HQ' the file was 40% smaller than the original, which means more compression/loss than I would would want. So the mystery continues.

[sidetracked]

For the record, I finally solved this. I tried using MakeMKV on ONLY the BDMV files created when I did a copy of the disc in 'Burn', not the whole ISO (which also had the certificate file). That worked. Gave me a playable, full sized mkv file.