www.makemkv.com

I think bmmomin was just saying that the failed to open message is still persisting "The volume key is unknown for this disc - video can't be decrypted". There's usually two reasons why one might get that message. There might not be a key for that disc and the dump file should be emailed ...

I think bmmomin was just saying that the failed to open message is still persisting "The volume key is unknown for this disc - video can't be decrypted".