[Bug 1380041] Re: Erasing NTFS formatted flash raises AttributeError: 'NoneType' object has no attribute 'get_cached_property'

[Launchpad Bug Tracker]

This bug was fixed in the package usb-creator - 0.2.56.3

---------------
usb-creator (0.2.56.3) trusty-proposed; urgency=medium

  [ Brian Murray ]
  * udisks/backend.py: fix some calls to mount_sync that were missed in the
    port to the UDisks2 API. Thanks to Marc Culler for the patch.
    (LP: #1279987)

  [ Yu Ning ]
  * usb-creator-helper: use parent object only if there is a parent.
    (LP: #1380041)
  * usb-creator-helper: re-create the udisks client otherwise it will not
    return the newly created device or partition. (LP: #1361474, #1300361)
  * usb-creator-helper: use parted instead of udisks2 to create the new
    partition table since udisks2 uses wipefs to erase the old partition
    table, however partition table erasing is not supported in wipefs yet in
    trusty, and that would cause a timed out error.
 -- Brian Murray <brian at ubuntu.com>   Thu, 18 Dec 2014 14:48:14 -0800

** Changed in: usb-creator (Ubuntu Trusty)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1380041

Title:
  Erasing NTFS formatted flash raises AttributeError: 'NoneType' object
  has no attribute 'get_cached_property'

Status in usb-creator package in Ubuntu:
  Fix Released
Status in usb-creator source package in Trusty:
  Fix Released

Bug description:
  When I'm trying to erase USB flash I'm get popup with following stack
  trace:

  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'

  To workaround this problem I've done:
  1. Remove existing partition on flash drive in GParted.
  2. Create new FAT32 partition for whole flash drive in GParted.
  3. Unplug/plug flash drive.
  4. Start usb-creator-gtk --- "Make Startup Disk" now active and works.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: usb-creator-gtk 0.2.56.2
  ProcVersionSignature: Ubuntu 3.13.0-35.62-generic 3.13.11.6
  Uname: Linux 3.13.0-35-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.5
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Sat Oct 11 12:00:17 2014
  InstallationDate: Installed on 2014-01-01 (282 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  SourcePackage: usb-creator
  UpgradeStatus: Upgraded to trusty on 2014-04-27 (166 days ago)

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