Still hunting for dat 500 error

bt/views.py

@@ -256,7 +256,7 @@ class LookupView(SearchView):
     def get_context_data(self, *args, **kwargs):
         context = super(LookupView, self).get_context_data(*args, **kwargs)
         if 'object_list' in context:
-            context['object_list'] = [obj for obj in context['object_list'] if not obj.object.old]
+            context['object_list'] = [obj for obj in context['object_list'] if not obj.old]
         return context
 
 class ViolationSearchView(SearchView):