Invalid config discovery after updating to 32.1

was working fine before update but now getting this
16-11-07 00:27:56 homeassistant.bootstrap: Error during setup of component discovery
Traceback (most recent call last):
File “C:\Users\dauth\AppData\Local\Programs\Python\Python35\lib\site-packages\homeassistant\bootstrap.py”, line 149, in _async_setup_component
None, component.setup, hass, config)
File “C:\Users\dauth\AppData\Local\Programs\Python\Python35\lib\asyncio\futures.py”, line 361, in iter
yield self # This tells Task to wait for completion.
File “C:\Users\dauth\AppData\Local\Programs\Python\Python35\lib\asyncio\tasks.py”, line 296, in _wakeup
future.result()
File “C:\Users\dauth\AppData\Local\Programs\Python\Python35\lib\asyncio\futures.py”, line 274, in result
raise self._exception
File “C:\Users\dauth\AppData\Local\Programs\Python\Python35\lib\concurrent\futures\thread.py”, line 55, in run
result = self.fn(*self.args, **self.kwargs)
File “C:\Users\dauth\AppData\Local\Programs\Python\Python35\lib\site-packages\homeassistant\components\discovery.py”, line 50, in setup
from netdisco.service import DiscoveryService
File “C:\Users\dauth\AppData\Roaming.homeassistant\deps\netdisco\service.py”, line 7, in
from .discovery import NetworkDiscovery
File “C:\Users\dauth\AppData\Roaming.homeassistant\deps\netdisco\discovery.py”, line 8, in
from .mdns import MDNS
File “C:\Users\dauth\AppData\Roaming.homeassistant\deps\netdisco\mdns.py”, line 2, in
import zeroconf
ImportError: No module named ‘zeroconf’

running on windows 10 64 bit.

fixed it

py -m pip install zeroconf

not sure why it got borked doing the update but its working now.