Traceback (most recent call last):
  File "/usr/share/software-center/softwarecenter/view/pendingview.py", line 219, in _on_button_pressed
    trans = aptdaemon.client.get_transaction(tid)
  File "/usr/lib/python2.6/dist-packages/aptdaemon/client.py", line 618, in get_transaction
    trans.sync()
  File "/usr/lib/python2.6/dist-packages/aptdaemon/client.py", line 283, in sync
    sync_properties(properties)
  File "/usr/lib/python2.6/dist-packages/aptdaemon/client.py", line 272, in sync_properties
    self._on_property_changed(property_name, value)
  File "/usr/lib/python2.6/dist-packages/aptdaemon/client.py", line 266, in _on_property_changed
    self.disconnect()
  File "/usr/lib/python2.6/dist-packages/aptdaemon/client.py", line 382, in disconnect
    self._signal_matcher.remove()
AttributeError: 'AptTransaction' object has no attribute '_signal_matcher'