Multiple issues in Polly on Fedora 19

After installing the latest Polly-0.93.11 (pre-alpha 3.11) on Fedora 19 following the instructions at http://rubenerd.com/polly-twitter-fedora/ I am facing multiple issues with Polly resulting in complete loss of functionality.

I launch Polly from terminal, it shows the Add new account wizard. After authorizing with twitter, first time it shows 'Please set a password for your new keyring' in the terminal (doesn't come up in GUI even when Polly is launched from GUI). After setting the keyring it asks to input it, which (always) results in 'ValueError: IV must be 16 bytes long'.

Here's a debug trace after launching from terminal:

[k4rtik ~]$ polly
Polly 0.93.11 (pre-alpha 3.11)
Copyright (C) 2011 Marcelo Hashimoto
cache path: /home/k4rtik/.cache/polly
config path: /home/k4rtik/.config/polly
data home: /home/k4rtik/.local/share/polly
initializing... done
Please set a password for your new keyringDEBUG: k4rtik connected successfully

Password (again):
Please input your password for the keyring
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/keyring/core.py", line 39, in set_password
    _keyring_backend.set_password(service_name, username, password)
  File "/usr/lib/python2.7/site-packages/keyring/backend.py", line 316, in set_password
    password_encrypted = self.encrypt(password.encode('utf-8'))
  File "/usr/lib/python2.7/site-packages/keyring/backend.py", line 456, in encrypt
    crypter = self._init_crypter()
  File "/usr/lib/python2.7/site-packages/keyring/backend.py", line 451, in _init_crypter
    return AES.new(password, AES.MODE_CFB)
  File "/usr/lib64/python2.7/site-packages/Crypto/Cipher/AES.py", line 95, in new
    return AESCipher(key, *args, **kwargs)
  File "/usr/lib64/python2.7/site-packages/Crypto/Cipher/AES.py", line 59, in __init__
    blockalgo.BlockAlgo.__init__(self, _AES, key, *args, **kwargs)
  File "/usr/lib64/python2.7/site-packages/Crypto/Cipher/blockalgo.py", line 141, in __init__
    self._cipher = factory.new(key, *args, **kwargs)
ValueError: IV must be 16 bytes long
DEBUG: ASSISTANT DELETED

I do not understand why Assistant gets deleted afterwards. Then I launch Polly again, it again authorizes with twitter but previous keyring can be used now:

[k4rtik ~]$ polly
Polly 0.93.11 (pre-alpha 3.11)
Copyright (C) 2011 Marcelo Hashimoto
cache path: /home/kasingha/.cache/polly
config path: /home/kasingha/.config/polly
data home: /home/kasingha/.local/share/polly
initializing... done
Please input your password for the keyringDEBUG: k4rtik connected successfully

Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/keyring/core.py", line 39, in set_password
    _keyring_backend.set_password(service_name, username, password)
  File "/usr/lib/python2.7/site-packages/keyring/backend.py", line 316, in set_password
    password_encrypted = self.encrypt(password.encode('utf-8'))
  File "/usr/lib/python2.7/site-packages/keyring/backend.py", line 456, in encrypt
    crypter = self._init_crypter()
  File "/usr/lib/python2.7/site-packages/keyring/backend.py", line 451, in _init_crypter
    return AES.new(password, AES.MODE_CFB)
  File "/usr/lib64/python2.7/site-packages/Crypto/Cipher/AES.py", line 95, in new
    return AESCipher(key, *args, **kwargs)
  File "/usr/lib64/python2.7/site-packages/Crypto/Cipher/AES.py", line 59, in __init__
    blockalgo.BlockAlgo.__init__(self, _AES, key, *args, **kwargs)
  File "/usr/lib64/python2.7/site-packages/Crypto/Cipher/blockalgo.py", line 141, in __init__
    self._cipher = factory.new(key, *args, **kwargs)
ValueError: IV must be 16 bytes long
DEBUG: ASSISTANT DELETED
Exception in thread Thread-13:
Traceback (most recent call last):
  File "/usr/lib64/python2.7/threading.py", line 811, in __bootstrap_inner
    self.run()
  File "/usr/lib/python2.7/site-packages/polly/__init__.py", line 241, in run
    self.callback(*self.args)
  File "/usr/lib/python2.7/site-packages/polly/twitter/realtime.py", line 421, in _buffer_loop
    del data[:]
TypeError: unhashable type

DEBUG: STREAM DELETED
DEBUG: STREAM DELETED
DEBUG: STREAM DELETED
^C

After posting a test tweet, 'TypeError: unhashable type' appears followed by Stream Deleted. I quit Polly at this stage using File->Exit, but the process doesn't quit even after Ctrl-C.

Each time I start Polly, it starts off with the Add New Account wizard forgetting previous settings/auth details.