Read for File System and ISO fails

[Complication]

I have an ISO that doesn't seem to be readable no matter if you try to read the ISO, read it mounted, or read a directory structure copied off the ISO. In my example I tried Harry Potter 6 and get the following error in the internal log for all three access types above:

DVDFab 6.2.1.5 (2009/12/20 11:51:49)

0m 01.84s: option dvd2dvd 1 dvd2mobile 1 bluray2bluray 1 file2mobile 1 filemover 1
0m 15.70s: got bdmv
0m 15.86s: exception when getting extended bdinfo 609 1 1067

There is likely something DVDFab is doing differently from the file system than when it accesses the raw disc.

ISO created is a direct byte-for-byte partition copy of the original disc.