Traceback (most recent call last):
  File "/usr/share/software-center/softwarecenter/backend/installbackend_impl/aptd.py", line 659, in _on_lowlevel_transactions_changed
    trans = client.get_transaction(tid, error_handler=lambda x: True)
  File "/usr/lib/python2.7/dist-packages/defer/utils.py", line 107, in _deferable
    return func(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/aptdaemon/errors.py", line 175, in _convert_dbus_exception
    raise get_native_exception(error)
DBusException: org.freedesktop.DBus.Error.UnknownMethod: Method "GetAll" with signature "s" on interface "org.freedesktop.DBus.Properties" doesn't exist