refraction and DR

[stellwagenc]

i have some problems with a refraction material and DR. The slave-buckets are interpreting this material different.

here is the rendering with a standard gray material - DR (no problem)
http://www.3d-passion.de/problems/vray_color_dr.jpg

here is the rendering with a refraction material - DR (other color in some buckets)
http://www.3d-passion.de/problems/vr...ractive_dr.jpg

here ist the rendering just only rendered with the workstation without slaves (no problem)
http://www.3d-passion.de/problems/vr...ive_single.jpg

and here is the scene
http://www.3d-passion.de/problems/Praesenter2.max

On all slaves is the same vray and max version with all updates.

Vray 2.0 SP1 for Max 2012 x64