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Sry for the long delay between answers. I confirm the same behavior also with 1.9.0
Tried to backup trough the command:
makemkvcon backup disc:0 walle/

It returned me a lot of hash errors like this one:
Controllo Hash per /BDMV/STREAM/00056.m2ts : 0.18% corrotto, 99.74% corrotto, 99.93% controllato

Sry for the long delay between answers. I confirm the same behavior also with 1.8.9.
I'm glad to do some more deep testing.

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That's strange I can play it both with vlc 2.1.2 and a libaacs 0.7 (I can play every aacs only protected disk until v28 due to lack of processing key and libbdplus config),

I tried to decrypt Wall-E using backup option of makemkv gui and i get a lot of corruption errors. So I think is not a libmmd issue but a general makemkv one.

@mike admin: if u need a sample of the bd I'm glad to help.

I did some more tests and i found that The Dark Knight Rise play well with the same setup.
If i switch back to libaacs 0.7 i can correctly play Wall-E and Underworld but not The Dark Knight Rise due to the missing processing key.
After upgrading libbluray to 1.5 nothing is changed.

I have two setup both with openSuse 13.1, makemkv 1.8.7 with libmmbd.so.0 softlinked to /usr/lib64/libbdplus.so.0 and /usr/lib64/libaacs.so.0. I tried with some bd (wall-e and underworld) but both vlc and xbmc are not able to play both discs. bd_info works well with both. in /tmp i do not find ant m...