Luckily I could reproduce the "try2" situation.
No sound, no picture, vobsub arrow blinking.
I was writing this when MP crashed alone, WITHOUT TRYING TO STOP TIMESHIFTING. 
I let it run for, say 20-40 seconds before it crashed alone.
This time there is a System Events log.
See the logfiles & screendumps.

That was my last attempt. Hope this stuff makes some sense to you.