all your textures need to be in runtime/textures and the mt5 or mc6 in the materials folder .

I make a clruntime folder and add whatever folders are needed for an item. Put all the bits in place and then zip the whole thing. When unzipped the paths are correct for a poser runtime. 

I dont think I would bother with mat poses unless you want to support poser 5 or maybe daz studio.  I think I had a script that batch converts mc6 to pz2.