diff --git a/PROMS/Volian.Controls.Library/StepTabRibbon.cs b/PROMS/Volian.Controls.Library/StepTabRibbon.cs
index 46ea35f3..27c68190 100644
--- a/PROMS/Volian.Controls.Library/StepTabRibbon.cs
+++ b/PROMS/Volian.Controls.Library/StepTabRibbon.cs
@@ -1723,7 +1723,8 @@ namespace Volian.Controls.Library
 			else
 				btnCASCreate.Enabled = (MyEditItem != null) ? (MyEditItem.MyStepPanel.ApplDisplayMode > 0) : false;
 			// B2016-237 added context menu item to change image size
-			btnCMImgSz.Enabled = MyEditItem.MyItemInfo.IsFigure && (MyEditItem.MyItemInfo.MyContent.MyImage != null || MyEditItem.MyItemInfo.MyContent.Text.ToUpper().Contains("#LINK"));
+			// B2020-058 added check for null MyEditItem
+			btnCMImgSz.Enabled = MyEditItem!=null && MyEditItem.MyItemInfo.IsFigure && (MyEditItem.MyItemInfo.MyContent.MyImage != null || MyEditItem.MyItemInfo.MyContent.Text.ToUpper().Contains("#LINK"));
 		}
 
 		// Made a public method so that it can be called when a step is deleted from the tree view.