Error in Logfile

Hey!
In my logfile is always an error loggen, but everything work well. But sometimes the popup says: that the Connection is lost, try to reconnect.
But everything work…

16-12-23 16:54:47 homeassistant.core: Error doing job: Task exception was never retrieved
Traceback (most recent call last):
File “/usr/lib/python3.4/asyncio/tasks.py”, line 233, in _step
result = coro.throw(exc)
File “/srv/hass/hass_venv/lib/python3.4/site-packages/homeassistant/core.py”, line 1049, in _event_to_service_call
yield from service_handler.func(service_call)
File “/srv/hass/hass_venv/lib/python3.4/site-packages/homeassistant/components/light/init.py”, line 258, in async_handle_light_service
yield from update_coro
File “/usr/lib/python3.4/asyncio/futures.py”, line 388, in iter
yield self # This tells Task to wait for completion.
File “/usr/lib/python3.4/asyncio/tasks.py”, line 286, in _wakeup
value = future.result()
File “/usr/lib/python3.4/asyncio/futures.py”, line 277, in result
raise self._exception
File “/usr/lib/python3.4/asyncio/tasks.py”, line 233, in _step
result = coro.throw(exc)
File “/srv/hass/hass_venv/lib/python3.4/site-packages/homeassistant/helpers/entity.py”, line 216, in async_update_ha_state
yield from self.hass.loop.run_in_executor(None, self.update)
File “/usr/lib/python3.4/asyncio/futures.py”, line 388, in iter
yield self # This tells Task to wait for completion.
File “/usr/lib/python3.4/asyncio/tasks.py”, line 286, in _wakeup
value = future.result()
File “/usr/lib/python3.4/asyncio/futures.py”, line 277, in result
raise self._exception
File “/usr/lib/python3.4/concurrent/futures/thread.py”, line 54, in run
result = self.fn(*self.args, **self.kwargs)
File “/srv/hass/hass_venv/lib/python3.4/site-packages/homeassistant/components/light/hue.py”, line 397, in update
self.update_lights(no_throttle=True)
File “/srv/hass/hass_venv/lib/python3.4/site-packages/homeassistant/util/init.py”, line 296, in wrapper
result = method(*args, **kwargs)
File “/srv/hass/hass_venv/lib/python3.4/site-packages/homeassistant/util/init.py”, line 296, in wrapper
result = method(*args, **kwargs)
File “/srv/hass/hass_venv/lib/python3.4/site-packages/homeassistant/components/light/hue.py”, line 207, in update_lights
lightgroups[lightgroup_id].schedule_update_ha_state()
File “/srv/hass/hass_venv/lib/python3.4/site-packages/homeassistant/helpers/entity.py”, line 290, in schedule_update_ha_state
self.hass.add_job(self.async_update_ha_state(force_refresh))
AttributeError: ‘NoneType’ object has no attribute ‘add_job’

Also seeing the same thing on .35.3 running on a Mac mini. Did not have this on .35.2 on rPI.