Ahah
-I open geck
-i selected in data
FalloutNV. esm
and Lighning race (i don't activate it ) because if i activate it overwrites (when i save) my original files. I do this for not overwrites and create a separate esm.
Before save i change:
- Changed the Race
- Reset the face
- And changed the clothing
- Follow your steps: Go to the Template Data > ActorBase > Choose the Ligthning Race > check only the Use Model/Animation box.
Screens:
Traits tab (all seems normal)

Spoiler:

Face tab flying head:

Spoiler:

Than i save the new esm

i found the problem (at point one i don't activated the esm...)

RagazzoDiPlatino wrote:

I tried to change the race, i want change Cass in Lighning race, I changed her race, but her face is odd is similar but not as now should be. And then there is the problem of the hat, I took it off, but if you load the game the hatis still there ...

You can edit her face too, in the same window as where you change your face.
On the bottom of the window check the "face" box, and go to the advanced face settings and start moving sliders.

RagazzoDiPlatino wrote:

Ahah
-I open geck
-i selected in data
FalloutNV. esm
and Lighning race (i don't activate it ) because if i activate it overwrites (when i save) my original files. I do this for not overwrites and create a separate esm.

Oooh! Well, you have to activate the lightning race in your game, I suppose. In my case I didn't create a new .esm/.esp, I just used the "Resident Evil - Jill's.esp" as the master and saved on it. Creating a new .esm/.esp and not activating the Ligthning race (which is the main plugin) will result in this failure no matter what. Which files does it overwrite? Sorry man, I don't know if there's a possibility to get it working without activating the Lightning plugin. :/

I made a tutorial for this a while back. Here's the link:
http://vgunetwork.forumotion.net/t658-editing-npc-races

Hope this helps.