I cannot find a way to render PSD texture layers

[Anonymous]

I am trying to render a shader in mental ray that has a psdFileTex node that has links to layers in the PSD that I am using. 

while defining texture "color:tex": failed to open texture file file_Layer.psd
API  0.0     23 MB error  30109: while defining texture "color:tex": failed to open texture file file_Layer.psd 
IMG  0.0     23 MB error  101003: file_Layer.psd: unrecognized file format, not an image file

My blin is connected to the psdFileTex and I am refrencing the 'Link to layer' and everything works fine in the scene, but as soon as I try to render I get that error. 

Any help would be appreaciated! 

[_sebastian_f]

have you tried grouping the layers like i said?

there is nothing to paste from the render log. there are no messages/warnings/errors except the normal loading/percentage/finishing messages.