PSD Network and layered textures question. tia sal2

Greetings All 

When I try and create a PSD network from layered textures in maya 7 I get 
an error in photoShopPaintTex.mel line 1199: no object matches name:
0.file 
TextureName.  And it doesn't create the psd network

However it works without using layered textures is this a bug or am I
doing 
something wrong.  Is there a fix or work around.

Thanks