Unity 5.4 - Sprite Shadow

Hello guys,

I am trying apply shadow do my sprites on the following shader, but unsuccessfully!



I am using the Shader "Sprites/Bumped Diffuse with Shadows"

Code (CSharp):

1. Shader "Sprites/Bumped Diffuse with Shadows"
2. {
3.     Properties
4.     {
5.         [PerRendererData] _MainTex ("Sprite Texture", 2D) = "white" {}
6.         _BumpMap ("Normalmap", 2D) = "bump" {}
7.         _Color ("Tint", Color) = (1,1,1,1)
8.         [MaterialToggle] PixelSnap ("Pixel snap", Float) = 0
9.                 _Cutoff ("Alpha Cutoff", Range (0,1)) = 0.5
10.  
11.     }
12.  
13.     SubShader
14.     {
15.         Tags
16.         {
17.             "Queue"="AlphaTest"
18.             "IgnoreProjector"="True"
19.             "RenderType"="TransparentCutOut"
20.             "PreviewType"="Plane"
21.             "CanUseSpriteAtlas"="True"
22.        
23.         }
24.             LOD 300
25.  
26.  
27.         Cull Off
28.         Lighting On
29.         ZWrite On
30.         Fog { Mode Off }
31.    
32.  
33.         CGPROGRAM
34.         #pragma surface surf Lambert alpha vertex:vert  alphatest:_Cutoff fullforwardshadows
35.         #pragma multi_compile DUMMY PIXELSNAP_ON
36.  
37.         sampler2D _MainTex;
38.         sampler2D _BumpMap;
39.         fixed4 _Color;
40.  
41.         struct Input
42.         {
43.             float2 uv_MainTex;
44.             float2 uv_BumpMap;
45.             fixed4 color;
46.         };
47.    
48.         void vert (inout appdata_full v, out Input o)
49.         {
50.             #if defined(PIXELSNAP_ON) && !defined(SHADER_API_FLASH)
51.             v.vertex = UnityPixelSnap (v.vertex);
52.             #endif
53.             v.normal = float3(0,0,-1);
54.             v.tangent =  float4(1, 0, 0, 1);
55.        
56.             UNITY_INITIALIZE_OUTPUT(Input, o);
57.             o.color = _Color;
58.         }
59.  
60.         void surf (Input IN, inout SurfaceOutput o)
61.         {
62.             fixed4 c = tex2D(_MainTex, IN.uv_MainTex) * IN.color;
63.             o.Albedo = c.rgb;
64.             o.Alpha = c.a;
65.             o.Normal = UnpackNormal(tex2D(_BumpMap, IN.uv_BumpMap));
66.         }
67.         ENDCG
68.     }
69.  
70. Fallback "Transparent/Cutout/Diffuse"
71. }
72.  

What am I doing wrong? Does this still work in older versions of Unity?

Could someone please help me?