Anaconda NavigatorとAnaconda promptが機能しなくなった

Question

作業中にAnaconda NavigatorとAnaconda promptが起動したらエラーを吐いて起動しなくなりました。

環境は
windows10 Home
Anaconda3-5.0.1
です。

エラーの内容は
Anaconda Navigator

Navigator Error
An unexpected error occurred on Navigator start-up

Report
Please report this issue in the anaconda issue tracker

Main Error
list indices must be integers or slices, not str
Traceback
Traceback (most recent call last):
  File "C:\Users\niman\Anaconda3\lib\site-packages\anaconda_navigator\exceptions.py", line 75, in exception_handler
    return_value = func(*args, **kwargs)
  File "C:\Users\niman\Anaconda3\lib\site-packages\anaconda_navigator\app\start.py", line 120, in start_app
    window = run_app(splash)
  File "C:\Users\niman\Anaconda3\lib\site-packages\anaconda_navigator\app\start.py", line 63, in run_app
    window = MainWindow(splash=splash)
  File "C:\Users\niman\Anaconda3\lib\site-packages\anaconda_navigator\widgets\main_window.py", line 161, in __init__
    self.api = AnacondaAPI()
  File "C:\Users\niman\Anaconda3\lib\site-packages\anaconda_navigator\api\anaconda_api.py", line 1258, in AnacondaAPI
    ANACONDA_API = _AnacondaAPI()
  File "C:\Users\niman\Anaconda3\lib\site-packages\anaconda_navigator\api\anaconda_api.py", line 70, in __init__
    self._conda_api = CondaAPI()
  File "C:\Users\niman\Anaconda3\lib\site-packages\anaconda_navigator\api\conda_api.py", line 1654, in CondaAPI
    CONDA_API = _CondaAPI()
  File "C:\Users\niman\Anaconda3\lib\site-packages\anaconda_navigator\api\conda_api.py", line 345, in __init__
    self.set_conda_prefix()
  File "C:\Users\niman\Anaconda3\lib\site-packages\anaconda_navigator\api\conda_api.py", line 494, in set_conda_prefix
    self.ROOT_PREFIX = info['root_prefix']
TypeError: list indices must be integers or slices, not str

で
Anaconda promptは

パラメーターの書式が違います - [0x7FFD2740C340]
[0x7FFD24552A90] ANOMALY: meaningless REX prefix used
[0x7FFD26DEDDA0] ANOMALY: use of REX.w is meaningless (default operand size is 64)
[0x7FFD26DD1E00] ANOMALY: use of REX.w is meaningless (default operand size is 64)
[0x7FFD2740C340] ANOMALY: meaningless REX prefix used
[0x7FFD24552A90] ANOMALY: meaningless REX prefix used
[0x7FFD26DEDDA0] ANOMALY: use of REX.w is meaningless (default operand size is 64)
[0x7FFD26DD1E00] ANOMALY: use of REX.w is meaningless (default operand size is 64)
[0x7FFD2740C340] ANOMALY: meaningless REX prefix used
Fatal Python error: Py_Initialize: can't initialize sys standard streams
LookupError: unknown encoding: [0x7FFD2740C340] ANOMALY

Current thread 0x00003d1c (most recent call first):
Fatal Python error: Py_Initialize: can't initialize sys standard streams
LookupError: unknown encoding: [0x7FFD2740C340] ANOMALY

Current thread 0x00004208 (most recent call first):
Fatal Python error: Py_Initialize: can't initialize sys standard streams
LookupError: unknown encoding: [0x7FFD2740C340] ANOMALY

Current thread 0x00002e80 (most recent call first):

です。

お願いします。

Answer 1

Navigator Error - string indices must be integers, not str #6097に同現象が報告されています。

上記によると、以下のように最新に更新することで解消できるようです（未検証）

$ conda update anaconda-navigator
$ conda update navigator-updater