diff --git a/PROMS/Volian.Controls.Library/DisplayTransition.cs b/PROMS/Volian.Controls.Library/DisplayTransition.cs
index 819472b7..d7f59bdf 100644
--- a/PROMS/Volian.Controls.Library/DisplayTransition.cs
+++ b/PROMS/Volian.Controls.Library/DisplayTransition.cs
@@ -63,7 +63,7 @@ namespace Volian.Controls.Library
 			_II_IncStepNumber=cbIncStepNum.Checked;
 			_II_Procedure=cbTranProcs.SelectedIndex;
 			_II_Section=cbTranSects.SelectedIndex;
-			if(tvTran.SelectedNode != null)
+			if (tvTran.SelectedNode != null && tvTran.SelectedNode.Tag != null)
 				_II_ItemID=(tvTran.SelectedNode.Tag as ItemInfo).ItemID;
 		}
 		private bool SettingsChanged