Oh, I see.  Yeah, just make a folder in runtime:textures like artist ___ cave, put the texture JPGs in there, and then in Poser's material room, browse to that folder to apply the texture images.  The reason that this was different is that this was a universal OBJ package, rather than being already organized for Poser.  The builder may not even use Poser.  Oh, and if there is some part which uses transparency, the transmap may be color-inverted, because some programs (the promos look to have been done in Vue) such as Vue use black for opaque and white for transparent.  That's easy to correct for using a math node in Poser.  Just yell if you run into that.

Poser 12, in feet.  

OSes:  Win7Prox64, Win7Ultx64

Silo Pro 2.5.6 64bit, Vue Infinite 2014.7, Genetica 4.0 Studio, UV Mapper Pro, UV Layout Pro, PhotoImpact X3, GIF Animator 5