Hi,
Is vray motion blur not supported with realflow meshes?
i got some blur to work. you have to turn on object mortion blur in the max object properties
Also: try using a vray physical camera, and keep your shutter speed higher than the framerate (i.e >30 if you are at 30fps etc.). You may also want to raise the blur strength value on the mesh loader modifier to something higher than 1.
The MB samples parameter does not have any effect on it though, so on curved type motion vectors the blurs have to be fairly subtle or you will see a lot of straight line segmenting in the blur.
b