CompuServe Messages

I've got another Vapor.axp strangeness. I've setup a default axpbox (center emitter), to simulate steam-like vapor coming out of a spaceship engine before it fires. I render the animation on my P90 (128mb ram), it turns out ok. I send the same critter to another P90 (128mb ram, same 3ds.set) over my Lantastic 6.0 network and it renders the vapor at right angles (from the top view) to the animation rendered on my P90. Have I forgotten some obscure, or maybe obvious, network parameter?