I got the same bug.
Traceback (most recent call last):
File "./script1.py", line 30, in <module>
call(["python", "script2.py", "arg1"], stdout=sys.stdout, stderr=STDOUT)
File "/usr/lib/python2.6/subprocess.py", line 444, in call
return Popen(*popenargs, **kwargs).wait()
File "/usr/lib/python2.6/subprocess.py", line 1123, in wait
pid, sts = os.waitpid(self.pid, 0)
OSError: [Errno 10] No child processes-- http://mail.python.org/mailman/listinfo/python-list
