Marshal error with no issue

Configuration
1

Hi everybody,
I try to upgrade (I’m in 0.45) hassbian… but I’ve got this :

ValueError: bad marshal data (unknown type code)

I followed this :

cd /srv/hass/lib/python3.4/site-packages/homeassistant
sudo find . -name "*.pyc" -type f -delete
cd /srv/hass/lib/python3.4/site-packages/pytz/
sudo find . -name "*.pyc" -type f -delete

After this I can upgrade HA, but nothings work… Wemo is out, zwave is out, and other stuffs don’t work…
A reinstallation would be complicated because I’ve got a lot of things (Nginx + certificate, dash buttons, zwave, mosquitos…)
Do you have a solution ?

thank you !