well, all i'm saying is, i managed to crash it on a muton mission, and the stacktrace showed it was trying to blit the legs, and the unit's movement state was MT_FLYING,
no idea what caused it, but i had the same issue with the police. padding out the pck file seems to have resolved it in both cases, but this is the wrong solution.
i can't say for sure what the circumstances were, because the units weren't visible at the time. whatever the case, i just thought i ought to mention it.