The installer has an error of some kind, and I don't think a readme.txt actually gets installed (couldn't find one anyway). However, there is a .pdf file. Search the Poser directory for Musclebound Michael Guide.PDF. He uses regular Mike textures and Mike hair. I don't think I used the MAT poses, but I didn't have a problem applying Mike textures so you probably just didn't get the settings just right (brows and lashes can be a pain in the butt). Try loading one of the regular Mikes with the texture you wanted to use and compare the material settings between the two. Once you get him the way you want him, save him to your characters with another name and you'll have a copy ready to go.