diff -r 2d47d81c79fb -r fecead61d222 mercurial/error.py
--- a/mercurial/error.py	Thu Jun 12 14:40:45 2014 -0500
+++ b/mercurial/error.py	Tue Jun 10 17:00:31 2014 -0700
@@ -111,7 +111,7 @@
             msg = parttype
         if self.params:
             msg = '%s - %s' % (msg, ', '.join(self.params))
-        super(BundleValueError, self).__init__(msg)
+        ValueError.__init__(self, msg)
 
 class ReadOnlyPartError(RuntimeError):
     """error raised when code tries to alter a part being generated"""