Relase of 2010-02-20 does'nt work (Windows)

Hi,

Rainbow asked me to upgrade today at the launch of my computer.

The upgrade of the 2020-02-20 failed : when Rainbow starts, just a windows "An unexpected error occured" with 2 choice "Restart" and "Close". Restart produced the same windows.

I tried to reinstall from https://www.openrainbow.com/ --> support --> Download App.
Same isse