So, a new version is up at the same location with the following three changes:

1) There is now an additional dialog that lets one choose between creating a pre- or a post-transform morph.

2) The OBJ file for the morph can now contain "f" lines without slashes, so e.g. Blender exports with neither normals nor UVs should now work. That fixes an oversight of mine that tripped up primorge's Blender test.

3) The input mesh is no longer required to have isolated vertices preserved from the original Poser export. Of course the order of the remaining (non-isolated) vertices still needs to be kept intact. This might fix the problem with the Mudbox export, but without looking at the actual OBJ files that is of course just a guess.

Hopefully this version will prove more successful.

-- I'm not mad at you, just Westphalian.