Hi, I have an unusual problem where a small percentage of the mkv files on my local drive do not play though Media Portal 1, either through video menu or with Moving Pictures. The files all seem to be 10 bit x265 HEVC mkv files, but the majority of these types of files play fine. Some, however, when you press play, the screen goes blank as if it is about to play, before it returns to the previous screen. I then just have to play the movies through media player classic, and there's no problem with them. The codecs section on Configurator tells me that it is using Lav Video Decoder for HEVC playback. I'm running version 1.19.0000 on Widows 7. Does anyone know what could be causing this and how to fix it? Thanks.