Actually, apparently I wasn't going down far enough into the folder. Once I opened the BDMV folder, it let me select either "index.bdmv", or "MovieObject.bdmv". [Stupid question: Where, specifically, should I be pointing MakeMKV *to* to begin ripping a BD movie? I was just guessing it was the "index" file, since that was one of my 2 selectable choices...] When I tried to "open" index.bdmv with MakeMKV, it gave the error:
MakeMKV v1.6.2 darwin(x86-release) started
Debug logging enabled, log will be saved as /Users/closet/MakeMKV_log.txt
Optical drive "DVD-ROM MATSHITA CD-RW CW-8124 DACH" opened in OS access mode.
Opening files on harddrive at /Volumes/HOW_TO_TRAIN_YOUR_DRA/
Evaluation version, 30 day(s) out of 30 remaining
The volume key is unknown for this disc - video can't be decrypted
DEBUG: Code 0 at 2Qz]0:?w{[bdz/z@:121263590
DEBUG: Code 0 at 2Qz]0:?w{[bdz/z@:29396943
Failed to open disc
So I'm guessing the only reason that failed was because I don't have the AACS key for the movie in my AACS directory? What percentage of Blu Ray movies should I realistically expect to have this problem with? In this case, the movie is the US version of How to "Train Your Dragon", for which I managed to find a French key on Doom9's Forum (which I tried adding to my AACS directory, but got the same error.) That was the only place I could find any keys.
Thanks again for your help, and for an awesome program! I used it extensively to back up my DVD collection and it worked like a charm!
Edit: I just tried to rip "Inception" and "The Lovely Bones" and they both failed, as well. Here's the log from after attempting "The Lovely Bones":
Debug log started at Mon Dec 13 11:17:04 2010 , written by MakeMKV v1.6.2 darwin(x86-release)
Using 262272KB for read cache.
001003:0020 DEBUG: Code 6053888 at %a(hQ[u}Mej6J/Dkv"A#(:":213130007
001003:0020 DEBUG: Code 6053888 at %a(hQ[u}Mej6J/Dkv"A#(:":213130007
001005:0000 MakeMKV v1.6.2 darwin(x86-release) started
001004:0000 Debug logging enabled, log will be saved as /Users/closet/MakeMKV_log.txt
002010:0000 Optical drive "DVD-ROM MATSHITA CD-RW CW-8124 DACH" opened in OS access mode.
003006:0000 Opening files on harddrive at /Volumes/THE_LOVELY_BONES_D1/
005050:0000 Evaluation version, 30 day(s) out of 30 remaining
003303:0000 The volume key is unknown for this disc - video can't be decrypted
001003:0020 DEBUG: Code 0 at 2Qz]0:?w{[bdz/z@:121263590
001003:0020 DEBUG: Code 0 at 2Qz]0:?w{[bdz/z@:29396943
005010:0000 Failed to open disc
Application exited at Mon Dec 13 11:18:36 2010
Does every Blu Ray that I rip need to have a key in the AACS directory?