Comment 3 for bug 512596

The bug has been opened on https://bugs.launchpad.net/ubuntu/+source/telepathy-butterfly/+bug/512596 and has some duplicates there

The descriptions seems to indicate it happens when adding a buddy

Stacktrace on 0.5.7

"Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.6/papyon/client.py", line 446, in event
    self._dispatch(method_name, *event_args)
  File "/usr/lib/pymodules/python2.6/papyon/event/__init__.py", line 44, in _dispatch
    if event_handler._dispatch_event(name, *args):
  File "/usr/lib/pymodules/python2.6/papyon/event/__init__.py", line 65, in _dispatch_event
    handler(*params)
  File "/usr/lib/python2.6/dist-packages/butterfly/channel/group.py", line 122, in on_addressbook_group_added
    self.AddMembers(self.__pending_add, None)
  File "/usr/lib/python2.6/dist-packages/butterfly/channel/group.py", line 71, in AddMembers
    contact_handle_id)
  File "/usr/lib/python2.6/dist-packages/butterfly/connection.py", line 139, in handle
    self.check_handle(handle_type, handle_id)
  File "/usr/lib/python2.6/dist-packages/telepathy/server/conn.py", line 154, in check_handle
    (handle, handle_type))
InvalidHandle: org.freedesktop.Telepathy.Error.InvalidHandle: handle number 18 not valid for type 1"

Other stacktraces:
http://launchpadlibrarian.net/38384257/Traceback.txt
http://launchpadlibrarian.net/40823588/Traceback.txt