Vray material doesn't get rendered

[diesellam]

Now I don't know if this is a problem or not.
I tried to apply the Vray glass blue material to the elements.

They seem to be applied. But when I did a test rendering, the VRay buffer is all black, what's the reason of it?

Thanks in advance. See the attached file.

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window glass-VRAY PROLBEM.skp

[thomthom]

You are rendering glass, 100% transparent diffuse in a completely black environment. You won't get anything but blackness then.

[diesellam]

You are right. Thanks for the tips.