Problem playing some MKV's

WD Legacy Products WD TV Live Streaming
2

It’s a well known (any annoying) bug that playback of one meessed up file results in all following proper files not being played unless a power-cycle is done. On first glance, your file seems to be within specs and should be played back, what I found curious however was this

Title : Fran τ ais Forc Θ s

Remux the file replacing these, maybe they’re confusing the SMP.