ok, we have to be clear here... and separate the UI from the board... how do you know the board has hung/crash?
are you able to just reconnect to the board from the UI without a power cycle?
have you tried setting pos to zero (as above) on the player ? (this helped me)
does the patch crash after you having been playing with it for a bit? or only during the first few seconds.
(my experience is, it crashes the first time it attempts to play a sample... but after that it appears to be stable)
note: this is why the sequencer example was good, as it plays all the samples quickly...
i suspect, if you are playing with a PAD, it might crash the first time you hit one particular sample, which could of course be a few minutes since it went live.
also if its crashing, it may be its not freeing resources correctly... so power cycling would probably be necessary.
(again it seemed quite stable after power cycle, but if I load other patches first then it crashes)
anyway, Ive forwarded my patch/wav to johannes, along with my findings so far... so I think we have at least one hand on the bug