camera modifier and backburner

Has anyone else had a similar problem? I’m doing an animation with a simple zoom out on a building. The camera does not move, I am only animating the lense angle. In addition I have an animated camera modifier to correct the perspective as the camera zooms out. When using backburner not all the render nodes take in account the camera modifier. Am I doing something that should not be done? I know that every time I use the camera modifier vray gives a warning in the message window, but there is never any problem.

I vaguely remember a similar issue and someone posted a work-around here, but I can’t find the thread right now…

Best regards,
Vlado

hmmmm…for now I just divided the animation between 2 machines…but obviously it is taking way too long!