Maya Mental Ray Normal Map Problems

beartraps

Maya is giving me a hard time when i try to render my normal mapped meshes in mental ray. Here are my render settings and a picture of the problem. I have my map as tangent space and it looks fine in maya hardware:

Quokimbo

Is that an ammo box?
Where is the problem? That diagonal line across the middle of the box?

MM

make sure you use .tga file format for the normal map texture.

and under mental ray options check "maya derivitives"

beartraps

Thanks MM that worked, I was using .psd