--- a/hgext/evolve.py	Sat Aug 04 12:48:20 2012 +0200
+++ b/hgext/evolve.py	Sun Aug 05 11:34:21 2012 +0200
@@ -638,7 +638,7 @@
     lock = repo.lock()
     try:
         if kwargs.get('old_obsolete'):
-            if kwargs['continue']:
+            if kwargs.get('continue'):
                 obsoleted.extend(repo.opener.read('graftstate').splitlines())
             else:
                 obsoleted.extend(revs)