color render problem

[Auanagano]

Hello everyone, could you help me with this problem? I am using just 3ds max 2011 with vray, and I have a problem with rendering: as you can see from post photos I have to use a brick wall of black color, while in making I get a gray wall with reddish shades (evidenced by red circle). only this material creates problems, because the other masonry in rendering the correct color out.

 

[lattu]

I see you use the sky portal to simulate sun and sky, why don't you use the default combination? The problem is probably there.
what type is the main light source? Do you have a reddish color?
also check that in the material settings there is no red reflection color

 

[Auanagano]

Thanks for the answer. Unfortunately in material settings there are no reflection colors. environment (skylight) have a light blue shade, while all light vrays are white.