That's not the proper log, it's the panic .err file that appears if no logging is enabled, but it doesn't contain any details. Enable logging, and if the error happens again, post your Couatl.LOG file.
However, if you searched the forum, this error has been posted by some users since a very long time, but we couldn't ever replicate it, it seems to be caused by a 3rd party airplane that is constantly resetting the passenger number for some reason, which causes GSX to be stuck in an infinite loop of passenger creation, until your audio drivers has exhausted all sound resources available.
