Help with NullReferenceException

Questions & Answers
1

I need another set of eyes to figure out a problem. I have an error of:
NullReferenceException: Object reference not set to an instance of an object

The commented lines are where it happens:

		private void DisplayMercAttributes(){
		for(int cnt = 0; cnt < Enum.GetValues(typeof(MercenaryVariable)).Length; cnt++){
			GUI.Label (new Rect(10, 70 + (cnt * LineHeight), 70, LineHeight), ((MercenaryVariable)cnt).ToString ());
			//GUI.Label (new Rect(85, 70 + (cnt * LineHeight), 70, LineHeight), _protag.GetMercAttribute(cnt).AcceptedValue.ToString ());
		}
		
		private void DisplayPracAttributes(){
		for(int cnt = 0; cnt < Enum.GetValues (typeof(PractitionerVariable)).Length; cnt++){
			GUI.Label (new Rect(10, 70 + (cnt * LineHeight), 70, LineHeight), ((PractitionerVariable)cnt).ToString());
			//GUI.Label (new Rect(85, 70 + (cnt * LineHeight), 70, LineHeight), _protag.GetPractAttribute(cnt).AcceptedValue.ToString());
		}

The problem lies at _protag.GetMercAttribute(cnt) and _protag.GetPracAttribute(cnt). It shouldn’t happen because the other attributes are set up the same way and work. The only difference between those attributes and these ones are that they only have 1 thing in their enum list, while the others have multiple things.

2

The only cause in this piece of code must be _protag not set or set to null. But there are other suspects that aren’t showed: GetMercAttribute() and GetPracAttribute() apparently are functions that should return a reference to some class - they could also return null and cause the error. If this doesn’t help solving your problem, post these two functions.