DBus Exception NoReply when running Telegram autopilot Logout test case on BQ Aquaris M10

Hi,

I am executing the following autopilot test case:

telegram.tests.test_Logout.Logout.test_UserLogout

On a BQ Aquaris M10 tablet and it fails with the Traceback below.

** NOTE: The testcase passes fine on a BQ Aquaris E4.5 device and the desktop.

Environment:
Desktop OS: Ubuntu 16.04
Branch: bzr branch lp:~cellsoftware/telegram-app/autopilotTest-3
M10 Tablet OS: Ubuntu 15.04 (OTA-13)
E4.5 phone OS: Ubuntu 15.04 (OTA-12)

Traceback (most recent call last):
  File "/opt/click.ubuntu.com/com.ubuntu.telegram/2.2.26.0/autopilot/telegram/tests/test_Logout.py", line 48, in test_UserLogout
    logout_confirm_dialog = self.app.wait_select_single(objectName='logoutDialog')
  File "/usr/lib/python3/dist-packages/autopilot/introspection/dbus.py", line 366, in wait_select_single
    return self._select_single(type_name, **kwargs)
  File "/usr/lib/python3/dist-packages/autopilot/introspection/dbus.py", line 266, in _select_single
    instances = self._select(type_name_str, **kwargs)
  File "/usr/lib/python3/dist-packages/autopilot/introspection/dbus.py", line 258, in _select
    return self._execute_query(new_query)
  File "/usr/lib/python3/dist-packages/autopilot/introspection/dbus.py", line 91, in _execute_query
    getattr(self, '_id', None),
  File "/usr/lib/python3/dist-packages/autopilot/introspection/backends.py", line 250, in execute_query_get_proxy_instances
    data = self.execute_query_get_data(query)
  File "/usr/lib/python3/dist-packages/autopilot/introspection/backends.py", line 226, in execute_query_get_data
    query.server_query_bytes()
  File "/usr/lib/python3/dist-packages/dbus/proxies.py", line 70, in __call__
    return self._proxy_method(*args, **keywords)
  File "/usr/lib/python3/dist-packages/dbus/proxies.py", line 145, in __call__
    **keywords)
  File "/usr/lib/python3/dist-packages/dbus/connection.py", line 651, in call_blocking
    message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.NoReply: Message did not receive a reply (timeout by message bus)

The problem lies when trying to interact with a Popup.Dialog with an object name set to 'logoutDialog'