I have several BDMV folders where I get the message "failed to open disc" when I point MakeMKV at the index.bdmv file. There is a BDMV, Certificate, and AACS folder. Why does this happen on some folders?
EDIT: Ah, I see another topic addressed this issue here:
http://www.makemkv.com/forum2/viewtopic.php?f=8&t=7638
The workaround by creating the empty "JAR" folder in the BDMV folder did the trick. Is it possible this will be fixed though in the future without needing the workaround?
failed to open disc
Re: failed to open disc
It's on Mike's list of things to fix for the next version.
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FAQ about BETA and PERMANENT keys.
How to aid in finding the answer to your problem: Activating Debug Logging