Catch a TypeError too along with KeyError

(There are cases where the dictionary var is actually None...)

analytic_structure.py

@@ -253,7 +253,9 @@
 
         try:
             field_subviews = field['views']
-        except KeyError:
+
+        # Catch TypeError too in case "field" is None...
+        except (KeyError, TypeError):
             return field
 
         for view_mode, subview in field_subviews.iteritems():