FIX 3DSMAX SKINNED CHARACTER IMPORT PROBLEMS

step 1 : setup the model and export as FBX.
step 2 : import in unity. the vertex and the normals will be flipped.
step 3 : attach this c# script, and run ONLY ONCE.
using UnityEngine;
using System.Collections;
using System.Linq;

public class THISISVERYGUARRO : MonoBehaviour {

	// Use this for initialization
	void Start () {
		Mesh mesh = GetComponent<SkinnedMeshRenderer>().sharedMesh;
		mesh.triangles = mesh.triangles.Reverse().ToArray();
	}
	
	// Update is called once per frame
	void Update () {
	
	}
}

step 4: remove last script, attach this JS script, and run ONLY ONCE:
#pragma strict
import System.Linq;
function Start () {
 	var mesh = (transform.GetComponent("SkinnedMeshRenderer") as SkinnedMeshRenderer).sharedMesh;
	var normals : Vector3[] = mesh.normals;
	for (var i=0;i<normals.Length;i++){
		normals[i] = -normals[i];
	}
	mesh.normals = normals;
}

function Update () {

}
step 5: remove last script, and now that the model is fixed, make it a prefab and worry no more.