--- a/src/cm/migrations/0007_populate_id_key_in_comments.py	Fri Jun 28 16:05:08 2013 +0200
+++ b/src/cm/migrations/0007_populate_id_key_in_comments.py	Mon Jul 01 12:43:20 2013 +0200
@@ -7,7 +7,7 @@
     
     def forwards(self, orm):
         "Write your forwards migration here"
-        for c in Comment.objects.all():
+        for c in orm.Comment.objects.all():
             c.id_key = c.key
             c.save()