Hi Sencha,
today i tried to install the new auto update and after that SA does not start anymore!

I also tried to deinstall and reinstall current version from sencha.com. Same result.

After deleting
USER\AppData\Local\Sencha\Sencha Architect 2.2
directory completely i got a fresh version that is able to start.

Hopefully you will find a solution for future updates that does not need to always
flush existing preferences, etc.

Current Solution, if SA does not start anymore:
drop sencha config directory "USER\AppData\Local\Sencha\Sencha Architect 2.2"

Cheers Holger