Yes, you have to download it from MTS - that is where the creator choose to upload it.
As stated in that post:
THE CEP HAS NOTHING TO DO WITH CLOTHINGS, SKINS, HAIR,
ACCESSORIES AND SUCH. IT AFFECTS ONLY *MAXIS OBJECTS*
CEP does NOT work on clothing. It is only objects that were unrecolorable, and CEP fixes that. Clothing, hair, etc, did not have this problem, and thus, CEP does nothing to them.