[2014-04-18 15:03:50,130: ERROR/MainProcess] Error in timer: RuntimeWarning(u'DateTimeField TaskState.eta received a naive datetime (2014-04-18 17:50:19.547046) while time zone support is active.',)
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/kombu/async/timer.py", line 171, in apply_entry
    entry()
  File "/usr/local/lib/python2.7/dist-packages/kombu/async/timer.py", line 64, in __call__
    return self.fun(*self.args, **self.kwargs)
  File "/usr/local/lib/python2.7/dist-packages/kombu/async/timer.py", line 132, in _reschedules
    return fun(*args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/celery/events/snapshot.py", line 73, in capture
    self.state.freeze_while(self.shutter, clear_after=self.clear_after)
  File "/usr/local/lib/python2.7/dist-packages/celery/events/state.py", line 421, in freeze_while
    return fun(*args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/celery/events/snapshot.py", line 70, in shutter
    self.on_shutter(self.state)
  File "/usr/local/lib/python2.7/dist-packages/djcelery/snapshot.py", line 145, in on_shutter
    _handle_tasks()
  File "/usr/local/lib/python2.7/dist-packages/djcelery/snapshot.py", line 139, in _handle_tasks
    self.handle_task(task)
  File "/usr/local/lib/python2.7/dist-packages/djcelery/snapshot.py", line 105, in handle_task
    task_id=uuid, defaults=defaults)
  File "/usr/local/lib/python2.7/dist-packages/djcelery/snapshot.py", line 128, in update_task
    obj.save()
  File "/usr/local/lib/python2.7/dist-packages/djcelery/models.py", line 358, in save
    super(TaskState, self).save(*args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/django/db/models/base.py", line 545, in save
    force_update=force_update, update_fields=update_fields)
  File "/usr/local/lib/python2.7/dist-packages/django/db/models/base.py", line 573, in save_base
    updated = self._save_table(raw, cls, force_insert, force_update, using, update_fields)
  File "/usr/local/lib/python2.7/dist-packages/django/db/models/base.py", line 635, in _save_table
    forced_update)
  File "/usr/local/lib/python2.7/dist-packages/django/db/models/base.py", line 679, in _do_update
    return filtered._update(values) > 0
  File "/usr/local/lib/python2.7/dist-packages/django/db/models/query.py", line 507, in _update
    return query.get_compiler(self.db).execute_sql(None)
  File "/usr/local/lib/python2.7/dist-packages/django/db/models/sql/compiler.py", line 975, in execute_sql
    cursor = super(SQLUpdateCompiler, self).execute_sql(result_type)
  File "/usr/local/lib/python2.7/dist-packages/django/db/models/sql/compiler.py", line 771, in execute_sql
    sql, params = self.as_sql()
  File "/usr/local/lib/python2.7/dist-packages/django/db/models/sql/compiler.py", line 940, in as_sql
    val = field.get_db_prep_save(val, connection=self.connection)
  File "/usr/local/lib/python2.7/dist-packages/django/db/models/fields/__init__.py", line 353, in get_db_prep_save
    prepared=False)
  File "/usr/local/lib/python2.7/dist-packages/django/db/models/fields/__init__.py", line 914, in get_db_prep_value
    value = self.get_prep_value(value)
  File "/usr/local/lib/python2.7/dist-packages/django/db/models/fields/__init__.py", line 906, in get_prep_value
    RuntimeWarning)
RuntimeWarning: DateTimeField TaskState.eta received a naive datetime (2014-04-18 17:50:19.547046) while time zone support is active.