rebooted pychron, now can't do stuff

active branch=None
active analyses=
description="message about setting repositories in preferences but not sure how to fix"
Traceback
Traceback (most recent call last):
  File "C:\Users\jross\AppData\Local\conda\conda\envs\pychron3\lib\site-packages\pyface\ui\qt4\action\action_item.py", line 345, in _qt4_on_triggered
    self.controller.perform(action, action_event)
  File "C:\Users\jross\AppData\Local\conda\conda\envs\pychron3\lib\site-packages\pyface\tasks\action\task_action_controller.py", line 31, in perform
    return action.perform(event)
  File "C:\Users\jross\AppData\Local\conda\conda\envs\pychron3\lib\site-packages\pyface\tasks\action\listening_action.py", line 58, in perform
    method()
  File "C:\Users\raregas\.pychron.0\pychron\pychron\pipeline\tasks\task.py", line 348, in run
    self._run_pipeline()
  File "C:\Users\raregas\.pychron.0\pychron\pychron\pipeline\tasks\task.py", line 535, in _run_pipeline
    self._run('run pipeline', 'run_pipeline')
  File "C:\Users\raregas\.pychron.0\pychron\pychron\pipeline\tasks\task.py", line 514, in _run
    if not getattr(self.engine, func)():
  File "C:\Users\raregas\.pychron.0\pychron\pychron\pipeline\engine.py", line 722, in run_pipeline
    if not node.pre_run(state, configure=configure):
  File "C:\Users\raregas\.pychron.0\pychron\pychron\pipeline\nodes\data.py", line 247, in pre_run
    return super(UnknownNode, self).pre_run(state, configure=True)
  File "C:\Users\raregas\.pychron.0\pychron\pychron\pipeline\nodes\base.py", line 109, in pre_run
    if self.configure(refresh=False, pre_run=True):
  File "C:\Users\raregas\.pychron.0\pychron\pychron\pipeline\nodes\data.py", line 130, in configure
    return self.set_browser_analyses()
  File "C:\Users\raregas\.pychron.0\pychron\pychron\pipeline\nodes\data.py", line 74, in set_browser_analyses
    is_append, analyses = self.get_browser_analyses()
  File "C:\Users\raregas\.pychron.0\pychron\pychron\pipeline\nodes\data.py", line 52, in get_browser_analyses
    self.browser_model.activated()
  File "C:\Users\raregas\.pychron.0\pychron\pychron\envisage\browser\sample_browser_model.py", line 76, in activated
    self.reattach()
  File "C:\Users\raregas\.pychron.0\pychron\pychron\envisage\browser\sample_browser_model.py", line 63, in reattach
    nans = self.db.get_analyses_uuid(uuids)
  File "C:\Users\raregas\.pychron.0\pychron\pychron\dvc\dvc_database.py", line 1235, in get_analyses_uuid
    with self.session_ctx() as sess:
  File "C:\Users\raregas\.pychron.0\pychron\pychron\database\core\database_adapter.py", line 192, in session_ctx
    with self._session_lock:
AttributeError: __exit__
WiscAr / pychron

rebooted pychron, now can't do stuff #56
