4.4.2 heads up, MX player no workee on my Nexus 7 or Nexus 10. Worked yesterday, not today after the 4.4.2 update. Just sayin'.
I think it was the fault of the kitkat update rather than the MX player. That's what I read anyway.
It is the fault of the "MX PLAYER" app, nothing changed in 4.4.2 to stop it working, the app itself is deciding to prevent its use on 4.4.2. The app doesn't have any way of overriding this. I'm going to use a player which doesn't have these faults.