Error in 0.66.1

After update from 0.66.0 to 0.66.1 i get this error … any idea?

2018-04-09 20:43:18 ERROR (SyncWorker_4) [homeassistant.util.package] Unable to install package home-assistant-frontend==20180401.0: Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-pql4buki/home-assistant-frontend/
2018-04-09 20:43:18 ERROR (MainThread) [homeassistant.requirements] Not initializing frontend because could not install requirement home-assistant-frontend==20180401.0
2018-04-09 20:43:18 ERROR (MainThread) [homeassistant.setup] Setup failed for frontend: Could not install all requirements.
2018-04-09 20:43:20 ERROR (MainThread) [homeassistant.setup] Unable to setup dependencies of logbook. Setup failed for dependencies: frontend
2018-04-09 20:43:20 ERROR (MainThread) [homeassistant.setup] Setup failed for logbook: Could not setup all dependencies.

Seem to have a similar issue…

In the log I get the following:

2018-04-19 08:34:36 ERROR (Thread-5) [homeassistant.util.package] Unable to install package home-assistant-frontend==20180404.0:
2018-04-19 08:34:36 ERROR (MainThread) [homeassistant.requirements] Not initializing frontend because could not install requirement home-assistant-frontend==20180404.0
2018-04-19 08:34:36 ERROR (MainThread) [homeassistant.setup] Setup failed for frontend: Could not install all requirements.
2018-04-19 08:34:39 ERROR (MainThread) [homeassistant.setup] Unable to setup dependencies of panel_custom. Setup failed for dependencies: frontend
2018-04-19 08:34:39 ERROR (MainThread) [homeassistant.setup] Setup failed for panel_custom: Could not setup all dependencies.
2018-04-19 08:34:39 ERROR (MainThread) [homeassistant.setup] Unable to setup dependencies of panel_iframe. Setup failed for dependencies: frontend
2018-04-19 08:34:39 ERROR (MainThread) [homeassistant.setup] Setup failed for panel_iframe: Could not setup all dependencies.
2018-04-19 08:34:39 ERROR (MainThread) [homeassistant.setup] Unable to setup dependencies of logbook. Setup failed for dependencies: frontend
2018-04-19 08:34:39 ERROR (MainThread) [homeassistant.setup] Setup failed for logbook: Could not setup all dependencies.

When I run “pip3 install --upgrade homeassistant” I get the following:

Looking in indexes: https://pypi.python.org/simple, https://www.piwheels.org/simple
Collecting homeassistant
  Using cached https://files.pythonhosted.org/packages/ca/b0/21c1b478c052bcd58fe615b09284bd127b9dc3809f2f911710b195377cff/homeassistant-0.67.1-py2.py3-none-any.whl
Requirement not upgraded as not directly required: pyyaml<4,>=3.11 in ./lib/python3.5/site-packages (from homeassistant) (3.12)
Requirement not upgraded as not directly required: voluptuous==0.11.1 in ./lib/python3.5/site-packages (from homeassistant) (0.11.1)
Requirement not upgraded as not directly required: async-timeout==2.0.1 in ./lib/python3.5/site-packages (from homeassistant) (2.0.1)
Requirement not upgraded as not directly required: astral==1.6 in ./lib/python3.5/site-packages (from homeassistant) (1.6)
Requirement not upgraded as not directly required: aiohttp==3.1.1 in ./lib/python3.5/site-packages (from homeassistant) (3.1.1)
Requirement not upgraded as not directly required: typing<4,>=3 in ./lib/python3.5/site-packages (from homeassistant) (3.6.4)
Requirement not upgraded as not directly required: certifi>=2017.4.17 in ./lib/python3.5/site-packages (from homeassistant) (2018.4.16)
Requirement not upgraded as not directly required: attrs==17.4.0 in ./lib/python3.5/site-packages (from homeassistant) (17.4.0)
Requirement not upgraded as not directly required: pytz>=2017.02 in ./lib/python3.5/site-packages (from homeassistant) (2018.4)
Requirement not upgraded as not directly required: requests==2.18.4 in ./lib/python3.5/site-packages (from homeassistant) (2.18.4)
Requirement not upgraded as not directly required: jinja2>=2.10 in ./lib/python3.5/site-packages (from homeassistant) (2.10)
Requirement not upgraded as not directly required: pip>=8.0.3 in ./lib/python3.5/site-packages (from homeassistant) (10.0.0)
Requirement not upgraded as not directly required: idna-ssl>=1.0 in ./lib/python3.5/site-packages (from aiohttp==3.1.1->homeassistant) (1.0.1)
Requirement not upgraded as not directly required: multidict<5.0,>=4.0 in ./lib/python3.5/site-packages (from aiohttp==3.1.1->homeassistant) (4.2.0)
Requirement not upgraded as not directly required: chardet<4.0,>=2.0 in ./lib/python3.5/site-packages (from aiohttp==3.1.1->homeassistant) (3.0.4)
Requirement not upgraded as not directly required: yarl<2.0,>=1.0 in ./lib/python3.5/site-packages (from aiohttp==3.1.1->homeassistant) (1.1.1)
Requirement not upgraded as not directly required: urllib3<1.23,>=1.21.1 in ./lib/python3.5/site-packages (from requests==2.18.4->homeassistant) (1.22)
Requirement not upgraded as not directly required: idna<2.7,>=2.5 in ./lib/python3.5/site-packages (from requests==2.18.4->homeassistant) (2.6)
Requirement not upgraded as not directly required: MarkupSafe>=0.23 in ./lib/python3.5/site-packages (from jinja2>=2.10->homeassistant) (1.0)

I downgrade to a version that worked. Then i rebooted my pi and Hass, when i could run upgrade

Thanks for the tip, but it did not work for me.

I ended up deleting the virtual environment and installed again using the installation guide which worked out absolutely fine. Was afraid that all the configurations and scripts etc. would disappear so I made a backup of the homeassistant folder but It went supersmooth. Haven’t tested everything yet, but so far so good!