[Bug 1605581] [NEW] Fail to "erase disk" in usb-creator

[Michal Dziczkowski]

Public bug reported:

In order to install a ISO on a USB stick with usb-creator, I need to
erase it with usb-creator (even if his USB drive is already empty). The
problem us that when I'm attempting to use the "Erase disk" function in
usb-creator, I get following error after few seconds:

org.freedesktop.DBus.Python.AttributeError: Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/dbus/service.py", line 707, in _message_cb
    retval = candidate_method(self, *args, **keywords)
  File "/usr/share/usb-creator/usb-creator-helper", line 218, in Format
    parent_dev = _get_parent_object(udisks, device)
  File "/usr/share/usb-creator/usb-creator-helper", line 49, in _get_parent_object
    parent = partition.get_cached_property('Table').get_string()
AttributeError: 'NoneType' object has no attribute 'get_cached_property'


My system: Ubuntu 14.04

** Affects: usb-creator (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1605581

Title:
  Fail to "erase disk" in usb-creator

Status in usb-creator package in Ubuntu:
  New

Bug description:
  In order to install a ISO on a USB stick with usb-creator, I need to
  erase it with usb-creator (even if his USB drive is already empty).
  The problem us that when I'm attempting to use the "Erase disk"
  function in usb-creator, I get following error after few seconds:

  org.freedesktop.DBus.Python.AttributeError: Traceback (most recent call last):
    File "/usr/lib/python3/dist-packages/dbus/service.py", line 707, in _message_cb
      retval = candidate_method(self, *args, **keywords)
    File "/usr/share/usb-creator/usb-creator-helper", line 218, in Format
      parent_dev = _get_parent_object(udisks, device)
    File "/usr/share/usb-creator/usb-creator-helper", line 49, in _get_parent_object
      parent = partition.get_cached_property('Table').get_string()
  AttributeError: 'NoneType' object has no attribute 'get_cached_property'

  
  My system: Ubuntu 14.04

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