To: epilf
Please accept my apologies for my inattention.
Please make sure that you have the latest version AVS Video Converter 8.1.2.510 which is available on our website
www.avs4you.com. I would recommend you to reinstall the software using the instructions
here.
The problem is quite unusual, so if the tip above does not help, please try converting your mkv file to other formats, for example AVI. If conversion to other formats is ok, please specify where do you play resulted blu-ray movie.
Regards.