Yes I've got UVMapper, got no problem with using it. Got Wings3d too, but don't use it as I don't really care for subdivision modelling, prefer building up polygons and primitives and welding them together.

I have made the textures on the UV template, have even got them to appear in the right place on the various parts of the house. 'Pele tower007 .pz3' looks very nice.

But when I export all the parts to put them together as a single prop and then import that back into Poser there is an indescribable mess of textures. 
Only 3 of 15 parts appear to have textured correctly and only 2 material names appear in the dropdown list in the Materials room with image nodes to textures I have assigned to parts of the prop. 
Why has Poser applied the textures correctly in the .pz3 file, but failed utterly when asked to apply the same textures to the same places in a .pp2 file?

What is the failure this time?