[SOLVED] MKV files now reading as M2TS files

Hi All, I have had Serviio for a few years now and it has been perfect for streaming files from my drive on to my sony blu ray over a wired network.
I always download MKV 1080 file with DTS soundtracks and its been perfect no problems at all.
Until today now all my MKV files are reading as M2TS files and when i play them back on the blu ray the play back in Dolby Digital rather than DTS.
Things i have tried uninstalled Serviio and reinstalled it which made no difference.
The only thing i did was add a password to my wifi router which shouldnt make any difference.
Any one got any ideas thanks in advance .

I fixed it.... the profile in the status was set to the wrong type of blu ray player the correct profile was
sony BDP-Sx80/SMP-N200(2011)
all back to normal now.