Yes - I'd have to go with the XACT errors as well. It's well known that they almost always result in random and frequent crashing.

And you seem to be throwing SND and XACT errors, which is an indication of some kind of sound hardware issue. Those generally always lead to random crashing. Proving that is fairly simple - get a log file from one of the other players that did NOT crash. They should be almost identical with the exception of the SND and XACT errors.