Quote - The problem is that the K4 mesh is actually smaller than M4's, so you will end up with a figure that bends like this; this is why the ColorCurvature script rerigs the figure with animated joint centers. To do it with UVMapper, load the K4 mesh and Export UVs.  Load the M4 mesh and Import the UVs you just saved.  Save under a new name, make a copy of the M4 cr2 and point it to the remapped .obj.

Just to verify that my instructions worked, I just followed them myself, and it worked exactly as I expected it to (I have a figure that is the same size and shape as M4, bends exactly like M4, but uses K4 textures). Did you by any chance use a copy of the K4 CR2? Otherwise, what exactly did you do to get the result in your image?