Sticking new models in

[Nabs]

Ok guys, I made a model and desided to try and put it in the game so I converted it to NIF with nifskope and put it in the meshes/weapons/2handedrifle/

 

then i put the path in to the ArchiveInvalidation and when I run the game and go to equip the chotgun I get a huge red box around my character with a while ! in it ,

 

can some one tell me what im doing wrong ,,, and the model does not have textures with my new models it should me linkt to the old shotgun textures