PROMS/Volian.Controls.Library/DisplayHistory.cs

@@ -897,7 +897,11 @@ namespace Volian.Controls.Library
 					// B2023-072: Don't crash if annotation type was deleted for the restore annotation
 					if (ai == null)
 					{
-						FlexibleMessageBox.Show(this, "Annotation Type was deleted, cannot restore Annotation Type\r\nCopy text from window in Change Details and paste into new annotation to restore the text.", "Annotation Type Deleted", MessageBoxButtons.OK, MessageBoxIcon.Warning);
+						AnnotationTypeInfo ati = AnnotationTypeInfo.Get(aai.TypeID);
+						if (ati == null)
+						{
+							FlexibleMessageBox.Show(this, "Annotation Type was deleted, cannot restore Annotation Type\r\nCopy text from window in Change Details and paste into new annotation to restore the text.", "Annotation Type Deleted", MessageBoxButtons.OK, MessageBoxIcon.Warning);
+						}
 						return;
 					}
 					OnAnnotationRestored(ai, ai.MyItem);