Traceback (most recent call last):
File "C:\Users\ANGL-pychron\AppData\Local\Continuum\anaconda3\envs\pychron3\lib\site-packages\traits\trait_notifiers.py", line 394, in __call__
self.handler(*args)
File "C:\Users\ANGL-pychron\.pychron.0\pychron\pychron\core\ui\qt\tree_editor.py", line 51, in _refresh_changed
obj, node = self._node_for(self.selected)
File "C:\Users\ANGL-pychron\AppData\Local\Continuum\anaconda3\envs\pychron3\lib\site-packages\traitsui\qt4\tree_editor.py", line 698, in _node_for
nodes = [node for node in factory.nodes
File "C:\Users\ANGL-pychron\AppData\Local\Continuum\anaconda3\envs\pychron3\lib\site-packages\traitsui\qt4\tree_editor.py", line 699, in <listcomp>
if node.is_node_for(object)]
File "C:\Users\ANGL-pychron\AppData\Local\Continuum\anaconda3\envs\pychron3\lib\site-packages\traitsui\tree_node.py", line 550, in is_node_for
object.has_traits_interface(*self.node_for_interface))
AttributeError: 'NoneType' object has no attribute 'has_traits_interface'
active branch=develop
active analyses=
description=""
Traceback