Animation marked as legacy, still wont work

Im using the free Raw Mocap animations from the unity assets store. I'm trying to do a simple walk backward animation.I've marked it as legacy and the animation type is set to 1. but the animation won't play, it won't even preview. If i put the unity "3rd person model" in the animation preview, it just stands in T pose. it says preview is unavailable when i try to put the default avatar in the preview. I have a walk forward animation that came with the unity 3rd person character and that works just fine. I've compared the settings and they are exactly the same(as far as i can tell at least. I've triple checked). I have a simple code set up, but i don't think it is with the code im thinking i have some type of setting wrong or something.

 using UnityEngine;
 using System.Collections;
 
 
 public class animationScripts : MonoBehaviour {
 
     float targetWeight = .1F;
     float fadeLength = 0.5F;
     
     void Start()
     {
 
     }
     
     // Update is called once per frame
     void Update () 
 {
         if (Input.GetKeyDown (KeyCode.S)) 
         {
             animation.Play("WalkBackward_NtrlFaceFwd");
         }
 
         if (Input.GetKeyDown(KeyCode.W)) 
         {
             animation.Play("walk");
         }
 
         if (Input.GetKeyUp(KeyCode.W)) 
         {
             animation.Blend("walk", targetWeight,fadeLength);
             animation.Stop("walk");
             animation.Blend ("idle", targetWeight, fadeLength);
             animation.Play("idle");
         }
     
 
 }
 
 }