This is interesting, as the same thing happened in Bryce 5 for me with network rendering (aka Bryce Lightning). As it turned out, apparently Bryce Lightning did not like the Indeo 5.11 codec. Rendering out to any other codec, or image sequence worked fine.

Unfortunately, it does now sound like this is the case here. I have not tried rendering a whole lot from imported Poser files (exploring Vue first), but will try it myself and let you know.

-Tim