Error running GNU radio V. 3.8.1 on windows 10

[Steffen Kiel]

Hello!

I am trying to run the newest stable release of gnu radio on windows, and i am running into some issues which im not sure how to fix. 

Here is the error log when im trying to start the application:

"setting gnuradio environment

WARNING:gnuradio.grc.core.platform:Slow YAML loading (libyaml not available)

Traceback (most recent call last):

  File "gnuradio-companion.py", line 102, in <module>

    run_main()

  File "gnuradio-companion.py", line 95, in run_main

    exit(main())

  File "C:\Program Files\GNURadio-3.8\lib\site-packages\gnuradio\grc\main.py", line 83, in main

    platform.build_library()

  File "C:\Program Files\GNURadio-3.8\lib\site-packages\gnuradio\grc\core\platform.py", line 182, in build_library

    continue

  File "C:\Program Files\GNURadio-3.8\lib\site-packages\gnuradio\grc\core\cache.py", line 89, in __exit__

    self.save()

  File "C:\Program Files\GNURadio-3.8\lib\site-packages\gnuradio\grc\core\cache.py", line 78, in save

    cache_file.write(json.dumps(self.cache, ensure_ascii=False))

TypeError: must be unicode, not str

"

Anyone know how i can fix this error, or why im getting it in the first place? This is a fresh install of 3.8.1.