I think its because you forgot to supply an IFL file. Look in the default player folder for it.
It has one, the faces and decals are visible to the host, but not to any other player. When a player spawns, I get missing texture console errors for base/data/shapes/player/[dir to face/decal]. Eg base/data/shapes/player/Add-Ons/Face_Default/Whatever.png
I've taken a look at Player_Beta, as that has similar functionality, but as far as I can tell there is nothing different, so I think that it has the same issue, however it was released anyway. I've found a topic with the same problem, but there were no solutions posted.