Hmm. The only time I've seen that one was when I used the zipfile of the Pro Cow that E-on posted on their website forum. The renderboxes were launching a dual iteration of ProCow for some reason, and both of them -looked- active, but were, for lack of a better term, busted all to hell. They never returned a 'testures received' flag, and kept accepting the texures until the physical ram flooded out and the box faw down go boom. Something is definitely not right there.