--- PyYAML-3.10/lib/yaml/constructor.py	2011-05-30 00:22:00.000000000 -0400
+++ PyYAML-3.11/lib/yaml/constructor.py	2012-02-03 17:04:13.000000000 -0500
@@ -560,7 +560,7 @@
             elif state:
                 slotstate.update(state)
             for key, value in slotstate.items():
-                setattr(object, key, value)
+                setattr(instance, key, value)
 
     def construct_python_object(self, suffix, node):
         # Format: