Last night I ran a Windows update and this morning Anaconda Navigator hangs when I try to launch it. After googling I ran some updates in Anaconda prompt:

```
conda update
conda update anaconda-navigator

```

And then when I try to launch anaconda navigator from the prompt I get this error:

```
2019-03-01 09:23:00,212 - ERROR download_api._get_url:416
Expecting value: line 1 column 1 (char 0)

Traceback (most recent call last):
File "C:\Users\xxxx\Anaconda3\lib\site-packages\anaconda_navigator\widgets\main_window.py", line 539, in setup
self.post_setup(conda_data=conda_data)
File "C:\Users\xxxx\Anaconda3\lib\site-packages\anaconda_navigator\widgets\main_window.py", line 576, in post_setup
self.tab_home.setup(conda_data)
File "C:\Users\xxxx\Anaconda3\lib\site-packages\anaconda_navigator\widgets\tabs\home.py", line 169, in setup
self.set_applications(applications, packages)
File "C:\Users\xxxx\Anaconda3\lib\site-packages\anaconda_navigator\widgets\tabs\home.py", line 204, in set_applications
apps = self.api.process_apps(applications, prefix=self.current_prefix)
File "C:\Users\xxxx\Anaconda3\lib\site-packages\anaconda_navigator\api\anaconda_api.py", line 888, in process_apps
versions=[vsdata.get('productVersion')],
AttributeError: 'str' object has no attribute 'get'

```

I use Jupyter Notebook and Spyder and this is causing me a major headache. Thanks in advance!