Stockmarket tutorial help

Hello!

I would like to ask for help regarding the stockmarket tutorial. I have a
clean ubuntu installation in which i copy-pasted the code of the tutorial.
I start the nameserver and the stockmarket cannot connect to it. The full
error is here:

Traceback (most recent call last):
  File "/usr/local/lib/python3.3/dist-packages/Pyro4/naming.py", line 334,
in locateNS
    proxy.ping()
  File "/usr/local/lib/python3.3/dist-packages/Pyro4/core.py", line 160, in
__call__
    return self.__send(self.__name, args, kwargs)
  File "/usr/local/lib/python3.3/dist-packages/Pyro4/core.py", line 306, in
_pyroInvoke
    msg = Message.recv(self._pyroConnection, [Pyro4.message.MSG_RESULT])
  File "/usr/local/lib/python3.3/dist-packages/Pyro4/message.py", line 160,
in recv
    msg = cls.from_header(connection.recv(cls.header_size))
  File "/usr/local/lib/python3.3/dist-packages/Pyro4/socketutil.py", line
456, in recv
    return receiveData(self.sock, size)
  File "/usr/local/lib/python3.3/dist-packages/Pyro4/socketutil.py", line
193, in receiveData
    raise err
Pyro4.errors.ConnectionClosedError: receiving: not enough data

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "stockmarket.py", line 63, in <module>
    main()
  File "stockmarket.py", line 53, in main
    ns = Pyro4.locateNS()
  File "/usr/local/lib/python3.3/dist-packages/Pyro4/naming.py", line 340,
in locateNS
    raise e
Pyro4.errors.NamingError: Failed to locate the nameserver
legezam@ubuntu:~/PycharmProjects/PyroTutorial$ python3 stockmarket.py
Traceback (most recent call last):
  File "/usr/local/lib/python3.3/dist-packages/Pyro4/naming.py", line 334,
in locateNS
    proxy.ping()
  File "/usr/local/lib/python3.3/dist-packages/Pyro4/core.py", line 160, in
__call__
    return self.__send(self.__name, args, kwargs)
  File "/usr/local/lib/python3.3/dist-packages/Pyro4/core.py", line 306, in
_pyroInvoke
    msg = Message.recv(self._pyroConnection, [Pyro4.message.MSG_RESULT])
  File "/usr/local/lib/python3.3/dist-packages/Pyro4/message.py", line 160,
in recv
    msg = cls.from_header(connection.recv(cls.header_size))
  File "/usr/local/lib/python3.3/dist-packages/Pyro4/socketutil.py", line
456, in recv
    return receiveData(self.sock, size)
  File "/usr/local/lib/python3.3/dist-packages/Pyro4/socketutil.py", line
193, in receiveData
    raise err
Pyro4.errors.ConnectionClosedError: receiving: not enough data

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "stockmarket.py", line 63, in <module>
    main()
  File "stockmarket.py", line 53, in main
    ns = Pyro4.locateNS()
  File "/usr/local/lib/python3.3/dist-packages/Pyro4/naming.py", line 340,
in locateNS
    raise e
Pyro4.errors.NamingError: Failed to locate the nameserver

I have tried it with ufw disabled and enabled with corresponding rules, and
still no change. The interesting part is that the warehouse example (with
servesimple) works exactly as it is descripted in the tutorial. (with
nameserver turned on)
The stockmarket stucks at the line: locateNS().

Environment: Ubuntu 64 desktop in VMWare workstation

I am really new to this, please help me!

Thank You in advance!

Regards,
Marcell Legeza

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