Hello,
If it is not to late to reply, I had the same issue with the Pink Floyd at Pompeii Blu-ray.
I ended up using MakeMKV to create a MKV folder of decrypted files and then used imgburn to make an ISO for my use.
Yeah, its an extra step, but it got the job done, and MakeMKV and imgburn are both free to use.
This Pink Floyd disc is the only one, so far that DVDfab has not been able to ‘analyze’.