traceback when trying to connect to an ip.

[Duality4Y]

hi there another traceback sorry for that!
but this time when i try and connect to my printer but when the ip is not available.
(I haven't connected to the acces point yet)

Connecting...
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/printrun/pronterface.py", line 1057, in connect
    if not self.connect_to_printer(port, baud, self.settings.dtr):
  File "/usr/lib/python2.7/site-packages/printrun/pronsole.py", line 720, in connect_to_printer
    self.p.connect(port, baud, dtr)
  File "/usr/lib/python2.7/site-packages/printrun/printcore.py", line 46, in inner
    return f(*args, **kw)
  File "/usr/lib/python2.7/site-packages/printrun/printcore.py", line 187, in connect
    "\n" + e.strerror)
TypeError: coercing to Unicode: need string or buffer, NoneType found