Index: Lib/trace.py =================================================================== --- Lib/trace.py (revision 75305) +++ Lib/trace.py (working copy) @@ -223,7 +223,8 @@ try: counts, calledfuncs, callers = \ pickle.load(open(self.infile, 'rb')) - self.update(self.__class__(counts, calledfuncs, callers)) + self.update(self.__class__(counts, calledfuncs, + callers=callers)) except (IOError, EOFError, ValueError), err: print >> sys.stderr, ("Skipping counts file %r: %s" % (self.infile, err))