Error when connecting

Is this map still working? I tried loading it on my test server and when I connected, I was booted and the client side log showed this error:

NullReferenceException: Object reference not set to an instance of an object.
  at MaterialConfig.GetMaterialPropertyBlock (UnityEngine.Material mat, UnityEngine.Vector3 pos, UnityEngine.Vector3 scale) [0x00000] in <00000000000000000000000000000000>:0 
  at MaterialSetup.OnEnable () [0x00000] in <00000000000000000000000000000000>:0 
  at GameManager.CreatePrefab (System.String strPrefab, UnityEngine.Vector3 pos, UnityEngine.Quaternion rot, UnityEngine.Vector3 scale, System.Boolean active) [0x00000] in <00000000000000000000000000000000>:0 
  at Prefab.Spawn (UnityEngine.Vector3 pos, UnityEngine.Quaternion rot, UnityEngine.Vector3 scale, System.Boolean active) [0x00000] in <00000000000000000000000000000000>:0 
  at World.Spawn (System.String category, Prefab prefab, UnityEngine.Vector3 position, UnityEngine.Quaternion rotation, UnityEngine.Vector3 scale) [0x00000] in <00000000000000000000000000000000>:0 
  at World.Spawn (ProtoBuf.PrefabData prefab) [0x00000] in <00000000000000000000000000000000>:0 
  at World+<Spawn>d__71.MoveNext () [0x00000] in <00000000000000000000000000000000>:0 
  at WorldSetup+<InitCoroutine>d__15.MoveNext () [0x00000] in <00000000000000000000000000000000>:0 
  at UnityEngine.SetupCoroutine.InvokeMoveNext (System.Collections.IEnumerator enumerator, System.IntPtr returnValueAddress) [0x00000] in <00000000000000000000000000000000>:0 
GameManager:CreatePrefab(String, Vector3, Quaternion, Vector3, Boolean)
Prefab:Spawn(Vector3, Quaternion, Vector3, Boolean)
World:Spawn(String, Prefab, Vector3, Quaternion, Vector3)
World:Spawn(PrefabData)
<Spawn>d__71:MoveNext()
<InitCoroutine>d__15:MoveNext()
UnityEngine.SetupCoroutine:InvokeMoveNext(IEnumerator, IntPtr)