OK, problem #1 - when you created your UV map, did you save the OBJ file after it was mapped?  That's a step all the instructions leave out.  One of those forehead slapping moments when you finally figure it out!

You can't JUST save the template from UVMapper, you have to re-save the obj file as well. The same is true if you UV map in Hexagon...........map, save, then export to OBJ in Hex.