스파이를 배치시 다음 문제가 생김:

NullReferenceException: Object reference not set to an instance of an object
  at GameManager.UpdateUnit () [0x005bc] in C:\Users\ChaeHo\Documents\civilization-iii\Assets\Script\GameManager.cs:256 
  at GameManager.DepStateExit () [0x000e7] in C:\Users\ChaeHo\Documents\civilization-iii\Assets\Script\GameManager.cs:676 
  at GameManager+<DeployUnit>c__Iterator0.MoveNext () [0x0013f] in C:\Users\ChaeHo\Documents\civilization-iii\Assets\Script\GameManager.cs:640 
  at UnityEngine.SetupCoroutine.InvokeMoveNext (System.Collections.IEnumerator enumerator, System.IntPtr returnValueAddress) [0x00027] in <c00e57f7b9d143dfa4988f82271522e8>:0