Having trouble exporting. It's giving me an error "NifExportError: Cannot export mesh with unweighted vertices. The unweighted vertices have been selected in the mesh so they can be easily identified." and it selects all the vertices. I can't seem to locate the problem. My skellington is clean, the vertex groups seem to have been popped in properly. I think I followed all the directions properly. On a side note, how do you get the texture to show so clean in the viewport? Mine just pops an colour onto each face (an average of colours within the face I think). On another side note, why do you set the mass for 1000 in the collision settings? Just curious. And thanks for the tutorial, I was using a different one and it wasn't quite so easy to follow.
EDIT: Ok I managed to export. Someone suggested exporting a clean, non-weighted version of my edited mesh and then importing it and working from that, and that seems to have helped (or I might have just missed a step). So I went through the next part of the tutorial and loaded my mesh in game and now I look like a sea urchin.
http://cloud-2.steampowered.com/ugc/578997538670369142/856FB23B28E65E3F2951735B1C860CC11FC7D797/