hgext/mq.py

--- a/hgext/mq.py	Sat Jan 21 23:50:58 2012 +0100
+++ b/hgext/mq.py	Sat Jan 21 21:39:27 2012 -0600
@@ -3133,7 +3133,7 @@
 def mqphasedefaults(repo, roots):
     """callback used to set mq changeset as secret when no phase data exists"""
     if repo.mq.applied:
-        qbase = repo[repo.mq.applied[0]]
+        qbase = repo[repo.mq.applied[0].node]
         roots[phases.secret].add(qbase.node())
     return roots