It sometimes happen with MAT poses and P5. I remember I had the same issue with a Mat pose for Victor (my free male V3 texture) It turned out that the texture was loaded ok but the texture STRENGTH had mysteriously put itself at 0% instead of the desired 100%. Have a look and see if it isn't the case here as well. I bet it is. And as far as I could see it WASN'T a MAT problem, but solely a P5 one.

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You just can't put the words "Poserites" and "happy" in the same sentence - didn't you know that? LaurieA
  Using Poser since 2002. Currently at Version 11.1 - Win 10.