No updates with G Data. Best so far, for me work fine with G Data, is adding line in wp-config:
define('SCRIPT_DEBUG', true);
that make wordpress load full js package.
No, you will be unable to work with website (many of buttons don’t work, you can dammage your website) I put my domain in GDATA whitelist, and ignored cache notification. I don’t know any other solution for that.
