Yo, the following:
Since 2 days i cant play any MKV files (via DLNA Server, Windows Media Player) that worked before on my TV Panasonic VT50, there is a "file not supported" message. Even my Panasonic blu ray player BTD221 cant play any MKV file. What happend meanwhile? I didnt change anything on my PC, all files and foldes are still "unlocked", no permissions set or changed.