Hi.
I am trying to make an animation of leaves' falling.
I am using PF source. and the amount of the particle emitting is not that large. And I use lightcache for the GI engine.

The problem is, when I render, 3ds max suddunly disappear.
And I turned of GI for a test, and I get an error message saying ,

"error; UNHANDLED EXCEPTION: Irradiance map thread Last marker is at P:/dev/localvss/vray/vrender/src/vraygeom.cpp, line586: VRayobject::shade(), calling Mtl::shade()"

But if I render only PF source with other one or two objects, it works fine.
Is this some memory lacking problem?
Has anyone seen this problem before?

I use 3dsmax 8.0 and Vray 1.47 advanced and NatFX plugin.

Thanks in advanved.